Appalling Service from Cell C

This is my 2nd complaint regarding Cell C just to show my disappointment with the way I have been treated and I've only had the contract for just under 2 months.Mind you the 1st query was never resolved.I was billed twice on 21 October.I sent them a bank statement as proof to the email address [Email Removed] I was given but I didn't get any feedback within the 48 hours I was told.Then a week later I call again only to be told that I had used the wrong email address.I then sent it again to the one i was given [Email Removed] only to be told AGAIN a week later that the 2nd email address was incorrect.This whole time I only received ONE call from Cell C and I have lost count of how many people have promised to get back to me,how many people have \escalated"the case"