Impossible to cancel a contract with Telkom

I tried to cancel the contract with Telkom after I app**** online for a phone. On the 19th November I received a router not a phone I called Telkom to cancel the contract I was advised to call 10213 sales department which I did I spoke to Siphiwe who advised that I have 7 working days to cancel and my account has been cancelled and courier company will call to pick up the router. 20th November I called again I spoke to Xoliswa she said my account shows active she will send e-mail for cancellation. 22nd November I received SMS that my first invoice will be higher due to advance billing" I called sales department and spoke to Mbali she said same thing that Xoliswa told me on the 20th Nov that my account shows active she will send e-mail for cancellation. Monday 26th November Snegugu advised that Mbali did not mention anything about cancellation my account is still active unfortunately we got cut off. I called immediately this time I spoke Tia she send a cancellation this was at 12:50 on 26 Nov 2018. To date no one contacted me and I do not want to be debited for the wrong device that I did not order