Telkom is treating their customers unfairly ignoring customers payments

I have paid my Telkom account using their app on the 14 of November and they came back on my account they debited on the 20 November double amount

And i am suppressed that they are still sending massages demanding another amount that they have already debited which is morethan the premium that i am paying, On top of that my account is blocked i am unable to it

Telkom is treating their customers unfairly!!