Cell C unable to CAP a contract

I took x2 cell phone contractors for my 2 children. The contract amounts were R299.00 each plus a R29 whatts app bundle. I specifically asked the consultant to ensure that these accounts are blocked and that my children cant use more airtime or data than what comes with the contract.

The past 2 months the debit order is R890.00 (July) and R880 (Aug). R234.00 more than what I singed for.

I called the call centre last month and was informed that 1 contract went over its limit. I instructed the call centre agent to immediately CAP the account like I asked for when I app**** for the contracts.

This month SAME Problem. Instead of a R666.00 debit my account was once again debited with R880.00.