Lost phone, lack of accountability, swearing

July 2014 I took my blackberry for repairs, at first Nash said it was the battery so I paid R250 for the battery only to find he was wrong and it needed to be taken for repairs. So the waiting period is usually 4-5 weeks. And I come back and he tells me they can't fix the phone but the phone was taken to a different branch after some back and forth I still did not have my phone as they had lost it. Mid February I demanded to speak to the owner and Mohammed the owner of the shop took charge of my case, he said he'd have me a replacement phone the following Monday. It's two weeks later and I come from there and I still don't have a phone. Worse still, he wasn't in the branch so Nash and I called. When I confront him about his lack of integrity and lies and failure to deliver service he says to me \I am a busy man