CELL C - Not receiving phone calls

For the last 4 days I am unable to receive any phonecalls one my CellC contract phone. I have spoken to 4 different consultants at the call centre, of whom 2 advised that the issue with receiving phone calls have been sorted, whilst the other 2 sent me several codes which were supposed to clear call blocking etc. I have logged a formal request for assistance yesterday afternoon at 15h30, on which I was supposed to receive a reference number, as as well as feedback/assistance from the techinal department witin 24 hours......no feedback as yet!! I have placed my simcard in another phone...also not receiving any calls. Worst service ever with no assistance for 4 days an the issue is still not resolved!! Stay away from Cell C!!!