Billing issue on Telkom's side, wifi put off wrongly. No response from Telkom

My husband is furious with how he has been treated the last month. There was a debit issue on Telkom's side where we were assured the problem will be investigated and resolved as it was clear that we were up to date on everything. Now suddenly a few days later our wifi has been put off!!! This is nonsense and we acted swiftly to avoid such issues as we need the wifi on a daily basis. Everytime thereafter when we phone it gets cut off as though no one wants to deal with the issue. Contact us urgently if you wish to keep us as clients. Regards Mrs Wentzel. ***