On May 9th, 2017 I picked up my vehicle from the service department at the "Brooklyn Dodge Jeep Chrysler and Ram" dealership located at 2286 Flatbush Avenue, Brooklyn, N.Y. 11234. Our family vehicle had been in the shop for a month and was being serviced for an ongoing issue it has had since the vehicle was purchased. Immediately, after leaving the shop, the gas light came on so I stopped at the gas station to purchase fuel. When I opened the gas cap, I found SUGAR in the fuel tank filler tube. The filler tube was clogged with a large amount of fresh sugar. If I hadn't been paying close attention to what I was doing, I would have pumped fuel into the gas tank and the entire fuel system would have been contaminated. This would have included the fuel tank, the fuel pump, the fuel line and the injectors. This could have also caused damage to the spark plugs, valves, pistons and cylinder walls. This large amount of sugar in the system could have caused catastrophic damage to the engine. Immediately upon discovering this situation, I phoned the service department and informed the service rep that answered the phone about the incident with the sugar. I was put on hold twice and then told that it was too late to bring the truck back to the service department because the shop was closed. When I returned to the shop, it was still open and the managers were still there. After returning to the shop I opened the tank and showed the workers the sugar that was in the tank, and they immediately denied that the sugar was put in the tank at their shop. I proceeded to explain to them that the truck had been in their possession for one month -Apri17, 2017 through May 9, 2017. We were extremely upset about this incident and wanted to speak with one of the service department managers but none of them were available. I even asked if they could call one of the store managers that night, but was told they couldn't call them because they had already gone home for the evening and up to this date none of the managers returned our call to apologize for the incident. We are also unaware on whether or not the owner or district was informed of this incident. This whole experience left us feeling like we were mistreated as customers and we will be taking our business elsewhere. Thank Goodness we have pictures as proof!!!