faulty night surfer and data usage/loss

My son hasn't been able to access data which was available on night surfer as part the contract with Telkom. He couldnt use his tablet. All his applications were closed. whilst we were attending to the problem all his monthly data was suddenly utilized on. We reported the fault/problem about 4 weeks ago, its all been a futile exercise because we learnt on the 17/10/2015 that this was never escalated to the technical staff for investigation. The staff at customer care give you inconsistent information, they refuse to give you contact information for seniors because they are not allowed, probably fear loosing their jobs. Who pays R700 every month for such a pathetic service. I had to threaten to report Telkom befor I could get contacts from Brenda Tshikudu based in Durban to get contact information. No response since 17/10 from Telkom. My landline service is also pathetic. Telkom has no date or notification for prepaid phone which is debited once a year. Are they above the law? They offer us reasonable rates to beat competitors at our expense. My son uses his tablet for school and for more than a month he can\t utilize his tablet except in wi-fi zone yet Telkom debited money today."