7" In-Dash Motorized Touchscreen Headunit

Got this as xmas gift. The first one I got had a scratch in the screen also words and symbols wore off sent it back not knowing if it really was new. Got the replacement but, because of cold weather took a month or so to hook up but when I did it seemed ok. Had to order separate Rear camera to which was fine except it took longer to get the camera. By the time I got the camera and a chance to hook it up when I put it into reverse and it goes into camera mode, radio sound quiets and it pops to video mode but no picture from camera and text on screen says "no source". I know the camera works tested it with battery hook up and separate display and no problem. Just to be sure I used a different video cord and Rear camera known to work and same thing happened. Granted this is not a $300 radio but I still expect it to work. I contacted Pyle and they said i could send it to them and they would fix it, however, I had to pay shipping costs and it was almost $20 for one way shipping. This was ridiculous because I bought this brand new with the understanding that it was in working condition but it was not, so why would I have to pay for shipping. Told them to shove it and got a new radio.