Vodacom makes you pay for there mistakes

I'm sick and tired with the service I'm getting from Vodacom each time I get promised from a lady named tandaka someone will call you regarding your refund for the over charges. Vodacom failed to upgrade my contract 3x and I warned them since Jan 2024 that on the 29 Feb 2024 my contract is coming to an end please ensure i don't get over changed. We in June 2024 my work cut down on expenses causing me a salary decrease now Vodacom overcharged 4 months and kept telling me lies we logged a requested for the payment. Monthend comes I'm back to square one. Now i'm so behind on payments it's not even funny that I'm getting late payments. I'm so sick and tired of the lies that I actually want to move to MTN. I see they finally changed my package but no refund for the mistakes they made. It's so sad tat every time I come to hello Peter it's a negative review for Vodacom and I have been with them since Dec 2001.

I need this URGENTLY Sorted out!!!!