Telkom Please come to my party it's worth R10 000!

I've been a Telkom fan most my life of 67 years, after all, we had land-lines... bet ever, However.. after my mobile contract with Telkom of some 6 years, I had a DUD in March 2018 when I received a new phone and mobile wi-fi goodie and these were neve activated for almost an entire month. I returned both new, never used, never activated devices to Telkom WaterCrest Mall in Durban around 9 April 2018. To date 13 August 2019, I am being charged by Telkom for a device that I never owned. I continuously reverse their charges which now have amounted to some R10 000!! So Telkom black-listed me and I cannot take a loan anywhere to go visit my family overseas.

I have emailed ALL and sundry, anyone with an @telkom.net or .co,za email address received an email from me. I've had two replies some two months ago, but NOTHING happening. ALL I want is for Telkom to CANCEL this contract and waiver that R10 000! That is ALL, and I deserve this AND for my name to be cleared and TELKOM to be black-listed!!!