Telkom express pavilion

I absolutely appalled and disgusted with telkom EXPRESS pavilion, I've been a loyal customer for years. I had cancelled my contract within a day off taking it out at the telkom express store in pavilion , the device was returned on 7 June 2021, I was promised that No other charges except a connection fee would go off my account, there was a case logged and I received a successful notification on reference ***2, I receive a notification today that my debit will be DOUBLE the premiums compared to my mouthy charges, my contract was cancelled on 7 June, almost a month later and you guys cannot reconcile your statement to reflect cancelled products??????? Telkom I'm really starting to understand why the rest of South is so appalled by your services, I want someone to contact me today and I want the charges cancelled