Bad service

On the 28th of Mover 2017 I went to Samsung bank city to hand I'm my phone for repairs as it was no longer charging. Gave it to the guy( Thabiso) who then further requested R250 for backup/save all the in for that was on my phone upon return. I paid the R250 and handed in my phone. 3 days later(Tuesday) a lady from the store called me I'm the afternoon to cone amd collect my phone. I went to the store tge following day only to find that she called me "by mistake" the phone is not yet ready.. now Thabiso the guy who assisted me the first 're couldn't even talk to me or help me, mow I had to return back to work in SOWETO after having to travel for nothing. It took them almost 2 weeks to get me my phone back and everytime I called the store ibess then referred to who they called their Manager Thabo. After battling I was then told to come.not once did tgey call me but I called them everytime. I get to the store and Thank hands me phone. takes my sim card etc... and asks for my passwords then hands me the phone then boom, my phone is DAMAGED... In shock I ask him what's happening and his response was they didn't put the screen back on property and the back his not sure.. Then goes to sat the back up wasn't done,i lost everything.and they will refund me money.. But did he justices the point my phone cane in with NO DAMAGES now it looks like s second hand phone. He then days to me here's my numbers. Calls to see what we can do, but on my side we are closed the entire December I'll call you second week of January to fix your phone as we don't have parts at the current moment. I'm still waiting for that call till today it's the 3rd of April.