Cancellation Nightmare

Trying to cancel LTE service 4 days after receiving modem. Cancellation requested on 5th March 2019 and reference given then was ********** 5. When I got home unplugged modem and packed back into box awaiting collection from courier. On 15 March 2019 , spoke to Zanele Khumalo who said I must use ref ********** 5 and ref ********** 87A, She would arrange for collection of modem by the courier. On 22 March, 29 March and 15 April 2019, received calls asking me if modem had been collected. On 1 May spoke to Lusanda who was helpful and assisted in cancellation and gave ref ********** 2 (He advised me original ref was sent to wrong department). On 3 May 2019 received a call from Precious who insisted I pay as she can see I am using the modem (modem still in box from 5 March2019). I told her I wanted to speak to manager, and after 20 minutes of insisting I pay, she said she would get her manager to call me. About an hour later, Precious's manager Maxine called me. I explained my situation and Maxine advised that the last time modem connected to network was 5 March 2019. Maxine said she would process cancellation and get courier to collect. To, 9 May 2019, receive SMS saying service suspended for non-payment. When I go into Telkom App it shows all pending queries for cancellation have been resolved, But I still have the modem.

Would appreciate any advise or assistance as Telkom is now affecting my credit score ..