Ac comp and heater core

Stay away! I bought a truck and the heater core was looped(disconnected) so i asked them to repair it and at first they said i would have to pay. Well for a $5700 truck it should have heat and AC so after alot of back and forth they agreed since new heater core is only $50. Then i go to pick up my truck after waiting 3days for a 6hr job and the AC Compressor they had unplugged i asked why the mechanic said he was testing it so i said plug in the compressor (electrical plug in at comp clutch) as soon as i out the AC on the compressor locked up and smoked badly. So im in a rental car for over a week now and i get the truck after they say they replaced the compressor which they didnt and this DELPHI ht6 compressor is known for leaking in the middle (belly leaker) when not assembled and installed with care. So now im on my way there to see if they will honor yet again repairing their repair! Ive been in rental car to the tume of $350!!