Cancellation and recund

Good day

Tobwhom it may concern.

I logged a call with Telkom in the month of April to cancel my existing contact and to date I have not received feedback only a sms with a case ***1.

Last month my instalment went through and this month I have noticed that my I was double dedited.

Please rectify this as soon as possible and kindly assist me with cancellation. Based on my contract I took out I need to give 30 days notice and its over the agreed period. Due to the advance in place please use it as a credit for the last instalment and cancel the agreement.