Shop owner ripping me off and broke my phone instead of repairing it!

I took my phone in for repairs and was told that i need a new screen and a new battery and it would cost me R800.00. When I collected my phone the shop owner told me that my phone is now 100% just to get home and found that my phone would not charge. It took it back again and he charged me another R220.00 to replace my charging point. When I went to collect my phone the following day he told me that i must go back later to collect my phone. I went back and he gave me my phone. Such a disappointment when i got home my phone still would not charge. I once again took it back and he told me to leave it with him and come back after work again. After work i went to the shop to collect my phone just to be told that he is training his wife to help him repair phone and he thought that she put the charging pointy in the wrong way. Once again i got my phone back and was told by the shop owner that i must not break my phone again. when i got home i found that my speaker wasn't working! I am too fed up with him to take my phone back just to be charged more money to repair something that was perfect when i first took my phone to their shop. Now after paying them so much money my phone does not want to charge neither does it come on. I had a R8000.00 that now is worth nothing and all the shop owner has to say is "I fix the phone"