Unable to get my bill and missing data resolved. Blatantly ignored.

After renewing our sons' contracts with Cell C at the Greenstone branch which in itself was a problem since some employee had taken it upon themselves (**********ly so) to renew their contracts on our behalf without our consent, we have received the first bill which is way above the agreed amount per contract. Our one son hasn't been receiving the 2GB free data he is supposed to receive and I cannot get anyone to help me. I initially mailed customer service on 7th Jan regarding my issues, I received an automated response with case number 190 ********** 56. Supposedly somebody would contact me within 1-2 days. Since then I have called 135 and left my 2-minute voice message (followed by the hash key). Still no response. I have emailed again once on the 10th and twice on the 11th. Again, nothing. Sort this out now.