Terrible/no service from Telkom mobile contacts

I have a mobile contract with Telkom, which expired or came to an end at the end of March. I then sent an email to Telkom with a copy of my id, requesting for the contract to be cancelled as i didn't desire to continue with it. I received a response from Telkom, asking me to cancel the contract online, i then tried to cancel the contract online but I got an error message every time i submitted my request. Telkom has called my more than 5 times about the renewal of the contract and in every call, i have made each of their call centre consultants aware that i am not interested in the contract anymore and made them aware of the challenges i faced online. i even reverted to the Telkom twitter account and still got no help while Telkom continues to bill me for services i don't even use anymore

Can Telkom please reverse the bill for May and June as i don't owe them anything, i reverted to suspending that mobile number online because that was the only thing i could do online. can someone from Telkom please have my contract cancelled and have them stop debiting my bank account because i will not pay for a service i don't use