Business ProfileforMotor Werks, LLC

I brought my moped for a change of oil and filter and to fix a flat tire. The year before I did the same with the same business and I was treated fairly, so I went back this year. Mr Kevin told me over the phone that the moped needed a new carburetor so he changed it and now the moped ran like new. I had not approved for him to put his hands on the carburetor. He did and charged me for it more than 150$. I was not happy for that but I decided to pay anyway and sent my son to pick the repaired moped up. When it got home it wouldn't start. I called them and told them that unexpectedly the moped didn't start. I was frustrated. When I took it to them initially all was working but the back tire. I asked them what they could do to help me and they said to take it back to them, there was nothing else they could do to help. I did, I sent my son again who's the only one with a truck that can do it, and the day after they told me it was ready, it needed a new battery. Another 150$, for a total of 500$ for a moped that costs 800$ new. Once again they did the job without asking me for any approval beforehand. At that point frustration was at its pick. I decided to send my son back, reluctantly paid the remaining 150$ and had the moped back home yesterday. Today I go to start it to go to work (this is my means of transportation) and surprise surprise, it didn't start. This is absolutely frustrating and gives me the sense of being robbed and abused. In the whole process I was also treated very poorly over the phone by both of them, Kevin and a lady whose name I don't know. They did absolutely nothing to come towards me, refusing even to send a copy of the invoice by email. I was yelled at, lied at, they took my money, did a terrible job, treated me very very poorly and unprofessionally. 500$ and I have a moped that doesn't work and the strong deep sense of having been robbed and abused. What can be done? One star just because I have to. It would be -10