Incompetence has caused me expenses!!

I was happily having my 20Gb per month service, Smangele called me to tell me to continue this on a contract of 199 per month. then I also ordered a Samsung tablet(which was delivered to me within 48 hours) next thing I know on 13th march I lose all my data and get new small data. I left message for her on the 16th march to correct this mess, she only called me 2 days later and told her to fix the mess and disruption she has caused my business because of lack of data. she never called back. to cut a long story short, I complained on hellopeter and I was contacted and told this will be sorted, today is the 28th March and still no data/new sim card with 20gb. I have had no data for 2 weeks of this month and now my new bill is 199 which is for the usage of the entire month. How can I pay for the whole month when because of incompetence and secondly lack of delivery I was unable to use what I pay for. secondly I have had to spend a lot of money the past two weeks to buy bundles. I am not paying this entire month's subscription because of cell c's incompetence!!!!! and I still don't have the card.