Debited for 2 contract - sent pillar to post no one can help me

The most awful experience to contact the call centre.

I contacted the call centre and spoke to several agents and they all confirmed that I'm being debited for 2 contracts, even though I upgraded my contract to pay R199 P/M only as per the agreement in October 2020. I've been through call centre to call centre, different agents, NO HELP... it's the most frustrating process ever, feels like no one at telkom knows what they are doing, no direction at all.

Call with loyde call reference ***, confirmed I must speak to sales as they mislead me, he seemed to know what he was doing, telling straight instead of pushing me from pillar to post

Alicia from the sales department refused to help as she cannot help me with such issues, I asked to speak to a manager she refused for me to speak to the manager and advised the manager would call me back Mariehalom Pillay - not sure I got the first name spelling correct. she also mention that she cannot promise when her manager would call me back... I must say this is fantastic service.

All I want is for Telkom to listen to the original call when they called me to upgrade and I was informed that it would be upgraded, the amount I would pay and all of the sudden. The the first debit order when off i thought it was probably the prorate that was included in the amount, the next month the exact same amount when off. I want the old contract to be cancelled and the previous 2 months additional amounts to be refunded to me