I bought a bmw motorcycle used by aureli meccanica...

I bought a bmw motorcycle used by aureli meccanica, dealership yamaha, they were kind at first and they told me that they work seriously ...
they have specified me several times that they would have made me the pre-delivery coupon, the washing of the bike that was dirty and they would have explained me everything on the bike. instead they proved themselves and did the exact opposite.
meanwhile they took 3 weeks to give me the motion because by their own admission they delayed for negligence or else to deliver the new bike to the guy who gave his trade-in and I had to take it. so after 2 weeks of waiting and the third for the passing practices in which they held the bike in their garage, they handed it to me dirty without cutting without washing without explaining anything to me (the only thing that was able to explain to me the boy the workshop is how to open and close the case), and I don't even know if I have a guarantee from them ....
to complicate the situation when I understood what the SERVICE sign on the on-board computer reads the manual, I noticed that there is a coupon to do ... but nobody told me anything. cutting to do of course the bmw, for obvious reasons, with the bike just bought and picked up by a "serious" dealership with an even more "serious" workshop .... (workshop located under the shop, not the one in front)