I had a leased vehicle through Nissan, which I obtained at Bertera Nissan. Bertera started calling me 6 months prior to end of lease, asking me to coming in. I kept repeating myself not ready, that I did not want to roll payments into a new lease, I will wait until end of lease. The calls wouldn't stop, as time grew closer, the calls came more often. The last call I stated loud and clear that I had two months out on my current lease, that there would be no deal unless the dealership was willing to buy out my lease liability on current vehicle. The salesperson insisted they could make that happen. I made the appointment to come in. I'm an honesty person, transparency and integrity is important to me, I'm a senior citizen, that has worked since I was fourteen years old, I'm a responsible person, I do not live over my means, I told the sales person Hans if you are not going buy out my current lease liability or if the new loan couldn't meet the budgeted amount I had in mind, the deal was off, that I would not be getting into another lease or loan. I had options, my credit score is outstanding, and I had a large down payment. Everything started off wonderful, Hans was charming and seemed sincere and transparent, after the dealership inspected my current vehicle, I was promised that the dealership would take over my lease end liability which include excess mileage and last two loan payments. I asked for that promise in writing several times during the process of selecting a new vehicle. The salesperson kept stating it's coming. I decided not to lease but to purchase with a loan, I did receive the low interest rate with a monthly payment amount that worked with my budget. I asked again about the promise in writing, Hans stated once they grounded the current leased vehicle, I would receive it. The day came to return the leased vehicle and pick up the new vehicle. The lease vehicle gets grounded, I asked again about the promise in writing, Hans had me signing documents on an ipad, I asked for copies, he stated he was unable to do that, that he could email the copies to me. I never got the promise in writing, no such email received. I trusted him, on a good note I love my new vehicle, drove away feeling great, Now my troubles begin, the dealership never faxed over the vehicle registration to my insurance company, I was charged for the ground vehicle plus the new vehicle. I made a called to Nissen Motor Acceptance Corporation regarding my end of lease liability for the leased vehicle, I was told by the corporation that they never heard from Bertera, that they never received any funds. I reached out to the dealership sales person Hans, he stated he needed to talk to Rich Salmon the general manager, I was not too worry, that Rich was on vacation that week, that he would have a chat with him once he returned. I waited, received no return call, I had to reach out again, now the promise changed, the sales person Hans only remembers stating that they would cover the two remaining payments totaling $700, I was upset and stated that was not the promise, I proceeded to call the General Manager Rich Salmon, at first he was friendly, seem sincere, stated he understood, that I had options, that I was a good customer, that this was my forth purchase with them, that he was going to honor the promise, he asked me to fax over the end of lease liability statement, that he needed to talk to Hans. Another week goes by, I texted Hans on status no response. Rich returns a call, now Rich changes his tune, they will not honor the promise, Rich states that Hans only remembers offering to pay off the two outstanding loan payments. Rich stated he was going to make a call to Nissen Motor Corp to ask them to waive the excess mileage charge, that he would call me back the next day. Never happen, no call. I had to call the dealership to be told Rich was not in. I made a call to Nissen Motor Corp, to see if they received any funds from Bertera and if they had been asked to waive the excess mileage charge, they stated only the dealership could waive the excess mileage charge, to date they had not received any funds from Bertera. I shared my concerns with the Nissen Corp representor, after hearing what I shared the representor shared he would be filing a complaint on my behalf to Nissan Corporation. I will be forwarding complaints with the Better Business Bureau and the Massachusetts Attorney General. Nissan Corporation should pull their dealership license with Bertera. Nissan is a great brand, Bertera has gone bad, they took all my joy out of buying a new vehicle.