Cancellation Request not carried out

We took out a contract on LTE uncapped device for R 907.57 Per Month after the first few Months we experienced that streaming movies on Netflix was a problem with interference all the time we reported this on 1 August 2019 and requested a cancellation case number ***1. Tests were supposed to be carried out by Telkom but never happened. We received one call from Telkom saying they were going to test our internet connection but never received follow up.

At this stage I was frustrated and returned the router to Telkom Tygerberg to Sirene Paulse Store Manager after explaining the back ground to my problem , and she gave me a receipt and quoted the case number on it see attached. Today I received an invoice from Telkom for November . Strange that I receive account for service which cannot be used without a router.