Telkom not responding

https://web.facebook.com/hellopetercom/posts/*** In short i have terminated my account with telkom on 29 June 2019. The modem and sattelite dish was removed on 18 December 2019. Whilst the service was good during the 9 years that the account was running it has changed to being appaling. I have had numerous phone calls from debt collectors and now have a bill in February 2020 for R15250 odd . i have furnished a written cancellation to info@telkom on 29 June 2019 of which i have a copy. i have written a letter *** on 28 November 2019 after he phoned me and i explained the situation to no avail. Pleas sort this matter out now . Please also acnowledge receipt as any reasonable business woud normaly do. Telkom acc no: ***

Thank you Daan Venter