NO HELP

My initial report to Cell C regarding a R3500+ billing error yielded a phoned call from them. However - this morning I missed ONE phone call - which I was supposed to receive yesterday - NO way for me to contact Millie back. No contact number, she has not attempted to call me again. Further to this - my account now seems to be suspended/deactivated. I am seriously unimpressed - how the hell am I supposed to get anything resolved? There is no way I have used up 3GB's of data between 15 december and 29 December. I cannot call from \a cell c device"because I DON'T HAVE ONE - despite the fact that IF I did have one - it would now not be working anyway. I want a senior member of staff to contact me as soon as possible to resolve this issue. Neither the cell c complaint department nor the cell c hello peter forum has yieled a result. This is completely hopless """