horrific service experienced @ Vodacom

a Loyal customer of Vodacom for a number of years, should not have to be pushed into complaining about the unacceptable level service that i have experienced. It Begins with me going to Vodacom to advise them that since i have received my new contract phone people have been complaining about the Echo they get when they phone and talk to me. The Unit was not damaged and in immaculate condition. I agreed to have the unit sent in for repairs and we completed forms and paid money for them to backup my device as well. I had to then for two weeks use an old phone with no word from Vodacom on the status of my phone. went back to vodacom and asked for my phone and they gave it back and no backup was done, so i lost all the apps and info i saved on the device. i was still in the area when we discovered that the device was still doing the same and it was sent back in for repairs again. my backup phone then broke because of the nano sim card that was taken in and out numerous times. i had to buy another phone so that i can still do my work. Microphone on phone was replaced and my expensive screen guard removed. Problem still not fixed and phone back in for rep. 2 months no cell phone yet :_(