A-1 Auto Sales

If I could post this w/​NO STARS I would have…
I bought a 2009 Chevy Aveo from A1 Auto July 2013, at the time I was really happy w/​the «service» I received from the ppl there (I was recommending them to anyone that was talking about getting a car). I finally got my approval, I took my /​95 Ford Taurus in as they «said» that they would give me $ 600 towards the trade in. Got my «new» car & went home, went to put my dogs booster seats in & one of the back seat belts was jammed in the seat hinge so I called A1 Auto right away (got no answer) so left a message, got no response, so called again the next day, left another message, again & again no response. So I figured that’s fine, I just won’t recommend them to anyone else if that’s how they want to do business (all attention until deal is done, then ignored).
AND THEN the other day I had to contact the loan company for a copy of my loan contract for taxes (as A1 never sent me one like they said they would), only to see that A1 Auto never added my $ 600 trade in towards my balance, so I called the loan company about it & they said that they only have the info that A1 Auto adds into the computer, however, when I signed the contract (that they never sent me) at A1 the $ 600 was in the trade in section.
I have called A1 Auto to find out why they never added my trade in, but just like last year,
NO RESPONSE!!!
PLEASE, BE VERY CAREFUL dealing w/​A1 Auto.