Livid! Poor Service and Incorrect Billing

After getting a sms advising my account will be credited with R664.22, R825 still went off my account!!! There was one attempt from Telkom to try and call me to update me on my account, they could have even left a VM to update me. When I called the call centre, spoke to several consultants no one could advise me on my account. Emailed [Email Removed] to advise when I will be available to take calls, but no one called. The service is just appalling. A month later and my query has still not been resolved.