Package Changed Without Consent & Price Increase

I’ve been a loyal Supersonic customer for 2 years, always paying via debit order. Suddenly, my bill went up by ~R130, and MTN sent me an SMS saying my service is now “500GB Anytime.” I did not request or agree to this change. My original “Home Fixed Uncapped” plan now delivers speeds often below 10 Mbps, despite being advertised at up to 100 Mbps. I request immediate restoration of my uncapped plan or reversal of charges, plus a clear explanation for this unauthorized change. I have all relevant documents: invoices, MTN SMS, and speed tests. If unresolved promptly, I will escalate this to ICASA with full evidence. — Stephan Smit