Pump It Up Audio

Review: On February 28, I went to Pump It Up Audio recommended by [redacted], a good friend of mine and part time emplyee of Pump It Audio. I left my Chevy Avalanche 2013 to get a dvd/stereo with bluetooth and GPS Navigation and head rests, [redacted] the owner of PUmp it Up Audio told me my truck would be ready by 7 pm as he mentioned his establishment would close at 7 pm. But, he had not done anything to my truck. He finished the installation close to midnight 12 pm. When he showed me the stereo, I asked about the blue tooth, so he mentioned it would be a bit extra. I said yes, go ahead and install it. He charged me that night for 899 dollars and asked cash preferred, so I had a bit of cash, I paid him 629 cash and 270 with my debit card. [redacted] mentioned this would cover 1 year waranty fully covered and all installation charges. When I asked him for the receipt, he reluctantly gave me one which is service order 1022. He said, that because I asked for receipt I he would have to charge me extra for the taxes. I asked about the navigation, and he said to come back and he would just change it. I went back on 3/14 and he changed the stereo charging me 350 for the navigation and 90 dollars for a cable. 440 dollars more. So in total he initially charged me 1370, I first paid him, but came back minutes later and asked for clarification and a receipt. He paid me back 30 dolars but refused to give me a receipt. So when I asked about the product and services charge in a receipt, he said he would givie it to me on Monday via text. So he installed a stereo system less than 500$ and charged me almost 3 times as much .Desired Settlement: Not only was the service horrible as he abused my trust having me wait until midnight on 2/28/15 but also violated my rights as a consumer by not giving me first a proper receipt, and the second time by denying me one.