BLUE SKY AUTO REPAIR GM ONLY.

Took my 1996 chevy silverado full size pickup truck in for a water leak. I was told by the owner of the shop that it was my intake manifold gasket. So i agreed to have it repaired. He stated that he would have my vehicle all day. Well at the end of i decided to stop by there on my way home from work because i didnt recieve a call from him like he told me he would. Upon arrival he told me that my water pump has a crack in it also and he had already ordered a new one without authorizing it with me first.He also stated that he needs my truck for another day.I asked him what is the price for the repairs and he told me 700.00 dollars i agreed whith that i also told him that i dont have any more money so dont perform anymore repairs to my truck. One more day came to a end still no call so i decided to go by again. When i arrived i observed and heard my truck missing very very bad the engine sounded horrible i asked him what the problem was and he couldnt answer he told me to come back tomorrow (here we go again). Still one more day has come to a end i recieve a call from the repair shop that my vehicle is ready. I asked him the amont is still 700.00 dollars right and he told me that we will talk about it when i get there. When i got there he told me that 6 of my fuel injectors had gone bad and he had replaced them again without notifying me first. So i asked him so what is the price now and he told me he would give me half off the fuel injector repair which was 200.00. I told him i brought my truck in here for a water leak and now im paying forall kinds of other repairs it just didnt seem right. I payed a total bill for 964.54 dollars. After talking to many of my friends they told me that my injectors were probably damaged by the repair shop when putting back the top half of my engine after repairing the intake manifold gasket. Please help me with this problem i feel like i totally got ripped off. Any response from you on what should i do would greatly be appreciated thank you. MICHAEL gardena, California