Lies about service and cancellations

On 29 July I went to the MTN store at Centurion Mall. I selected a PRO HOME UNCAPPED INTERNET PLAN of 20mbps. This was temporary at our new house until our fibre line was installed. I knew of a 1 month notice for cancellation. On 15 August I sent a cancellation notice to *** regarding cancellation of the service. The same day I received a reply that I will be contacted within 24 HRS. on 16 August retentions tried to contact me but I was in a meeting and they asked that I indicate when they can call again to which I responded the same day to call me again. this did not happen. On 24 August I emailed retentions again stating that I have not heard from them again. I was called eventually and then received an email on 29 August informing me that I have to return the router before the cancellation can be initiated as the router is not mine(NOT IN THE TERM AND CONDITIONS!!!) I returned the router to MTN Centurion the same day for cancellation purposes. On 2 September I received an SMS from MTN stating that the contract will be cancelled from 2 September. On 3 September I received an SMS again for statements for OCTOBER for the service even though I no longer had the router or sim for the service. 4 September I receive a SMS from MTN stating that the router I dropped for cancellation has been repaired and is on its way back to MTN Centurion Mall for collection. I phoned 083135 to ask what was going on and was told that retentions declined my cancellation and I was told to go back to the MTN store at Centurion Mall because something was done incorrectly at the store. At the store I was told to call 083135 and talk to retentions department as the store system stated that the unit was returned and the service cancelled. I am being stuffed around and NOBODY is sorting this issue! I WILL NOT PAY FOR OCTOBER AND SHOULD ALSO NOT PAY FOR SEPTEMBER!! I NEED FEEDBACK AND ANSWERS. I will report this gross neglect in this service to the consumer council as well as the 20mbps service is NOT TRUE and so far the month to month cancel at any time with notice is also NOT TRUE! I await feedback from a person that know what they are doing URGENTLY! I have all my SMS and email proof of the process to date with reference numbers.