No phone since 14th December!

I took my iPhone 5 in to the V&A Waterfront branch of CellC for repair at the beginning of December 2014. After a month with no feedback, I returned to the store towards the end of January to no avail (the systems were 'down' so the could not check the status). I have since returned to the branch personally 5 times and called more times than I can count - the line has only been answered twice, the rest of the time it just rings. In every case I have been told that there is an issue with the system, or that they will get back to me etc.<br> <br> The times that I have been able to contact the branch, I have been promised action by numerous staff members, and the 'Manager'. The most recent promise being that I would receive my phone back by Friday 13th March GUARANTEED. <br> <br> It is now the 16th March, fully 3 months since I took my phone in for repair. There is still no sign of the unit and no effort being made to get it back to me.<br> <br> Overall, I have found the service of the Manager to be of ********** quality. He and the staff have been unhelpful and unreliable. <br> <br> Cell C..... how do I get my phone back (or a replacement)? Is this the best the flagship Waterfront branch can do?<br>