Repair fraud

Hi, I have a problem with a workshop: I bought a scooter from Ebay 2 weeks ago (yes, I know that was a mistake and I won’t do it anymore). The scooter had some flaws, but it wasn’t that expensive. A mechanic who wanted to have my brake and some other things repaired, said that it wasn’t worth repairing something with this scooter, because the engine would soon give up. I already thought that I’d give it up right away. When I was at the workshop, I described my problem and explained the defects. It was decided that the engine should be checked first and nothing else should be repaired. This was also recorded in writing. Unfortunately, the order is in the workshop. After the examination of the engine, I should be called and I wanted to be informed of the result so that I could decide whether or not to go back to the workshop. The employee in the workshop said they would call on Tuesday, yesterday. But since yesterday I did not call the workshop today. The employee said that this and that had been repaired. I thought I had interrogated myself. Apparently the engine was not checked but just used spare parts worth 350€. Since that was not agreed, I am not prepared to pay even the least. Unfortunately now the car can be repaired. can I do something? The workshop has cheated on me. Of course, they could expand the parts again, but the previous condition will no longer be reached and so my right of return will expire… Hope someone can help me. I found something on the Internet about a similar problem:http://www.frag-einen-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an-an . P.S. Who cares: it’s a Suzuki Katana AY 50.