Worst service ever

This is the second time this month that I am posting on this site about the same problem with Cell C first of all I receive a faulty device, secondly they say when you return the phone it will take 7 days to replace your old device with a new device if it is faulty which is the case. I am absolutely disgusted at cell c. My debit order for this new phone that I haven't had for the whole month is going off my account this month,that they will take but they will not give me any feedback or my new device. This whole problem started on the 3 June 2015 today is the 26 June 2015. Now I know what 7 days means for Cell C. Great service never ever think that cell c is a great service provider.