Terrible attitude and service

I sent in my Samsung phone for repairs months ago and only got a quote recently for repairs - R2700! I paid this amount (the WHOLE amount had to be paid upfront) and was assured that my phone would be ready on 4 March. I have not heard a word from them since then. I have phoned on several occasions and received very blunt rude replies from a female (who didn't give me her name) - she is probably the same female who took my payment ( she curtly told me to \sit down!\" and proceeded to ignore me for 10 minutes before taking my payment). I even received an invoice from them stating I still owed R2400. I have been on the phone all morning - I either get cut off, get a voicemail stating their office hours or get put through to what sounds like a fax machine. This is unfortunately my second dealing with them. In 2014 I had my screen replaced on warranty - same story. Staff extremely rude and unhelpful. Took 6 weeks when it was supposed to take 2 weeks and they broke the cover off to my charging point. Unfortunately they are the only Samsung repair dealer in Pretoria so I have no choice but to go to them! Every time I have been to their offices I have witnessed other clients bein"