Robbing contract clients via billing service

This company has overcharged me for 4 months on an existing contract that their Customer care department claims was expired by end of Jan 2023.

Currently being paying an additional R70 per month over 4 months.

Escalated with various customer care agents and Supervisors from Nathan Adam's (Supervisor), agreed that I was overcharged. Reference no (***)

Spoke again to Jodie Klaaste who escalated for feedback from Nathan Adam's. No feedback given.

Spoke again to Lamla Manikivana. He Escalated up Accounts/Billing department. Reference no ( ***)

Called again today, failed yet again. Re explained the issue at hand. I just get told, my old contract expired in Jan 2023 and all incentivised agreed monthly premiums fall away and that I will be charged the month to month billing.

My dillema is being overcharged for 3 to 4 months after making numerous calls to investigate, escalate on my behalf. I keep receiving the month to month bill with no proper feedback or apologies for the overcharge.

I expect an apology from Vodacom, for them to understand what went wrong. The supervisor Nathan Adam's who confirmed a system glitch caused or may have created this mess. The person I spoke to in Jan 2023 may have offset my contract and agents seem to be covering her tracks on the system with the same old response.

"All calls are recorded ", so investigate a call I made to an agent in Jan 2023, figure out who is in the wrong as it's clearly not me and find out who reset the system to invoice me the incorrect billing for the last 3 months and why has it not been resolved since then.