Bad Service

I took my phone to Samsung clearwater Mall. It's a Samsung note 3 and the drop down notification panel wasn't working. I was told to leave the phone there for about 1 hour 30 minutes. I left it there. When I came back and switched it on it took longer than usual to switch on. I then realised that all my data was gone. I was told that they had done a software reload hence the loss of data. I was furious about this because I was not consulted. They told me that they had called me to tell me about the data but I didn't answer the phone. I asked why they didn't wait for me to respond first before doing the reload because I would've wanted them to save my data. The phone at this point also couldn't detect the sim card. I was told to take it back to iFix and tell them my problem. When I got there I was told to wait for 20 minutes so they could figure out why it couldn't detect sim. I was then told that Vodacom software had been loaded onto my phone so they needed to remove it and put MTN software because I use MTN. I was told to come back Sunday. I got a call Sunday morning and was told my emei number had been deleted in the process.