Unhappy customer

Hi my name is Mrs Maphaba,i am very disappointed with unprofessional and poor service from Telkom. In June some lady contacted me and offered me a huwei router and she explained that it comes with 4 gig day 4 gig night or it was 10 I don't remember. For R199 then she explained to me the terms and conditions, she said the router comes with those data and told me that if I am not satisfied with the product I am welcome to cancel before 7seven working days. Indeed the router was delivered nd with less data which we did not agree on the data only lasted me for ten minutes,then I lost my trust and contacted Telekom in 5 working days after receiving the router. I told them I'm no longer interested they must cancel my contract then they said they will suspend it and cancel the contract. Before month end I was suprised they deducted my money. I called them then they said yes they see that I canceled nd gave the reference number. I waited again the following month they deducted my money I called I spoke to a lady by the name of Nosipho she said she can see that I did call in June she is sorry they will investigate the matter reference no again.the third time they took my money I called and found a gentleman called zipho he said sorry too they will call me and arrange to come and collect their router he gave me Email and the reference number again ***.I called again these other consultant to me the same story on 21/08/2020 and on 01/10/2020.i waited no call nobody came to collect the router so now they send me a letter of demand threatening to take me to credit beauru. So this is so disappointing and caused me stress as I did call them before 5 days of receiving nd cancelled. Pls help me. Telkom is taking advantage of us out there.