MTN unnecessary charges

Dear MTN I would like to bring to your attention the fact that I received an SMS on 28.4.2025 informing me my contract has expired. I would be charged R25.00 extra on a month to month basis. I upgrade on 29.4.2025 at Cradlestone Mall and see that the R25.00 has already been added to my account. THIS IS TOTALLY UNACCEPTABLE!! I called 135 on the 28th to upgrade only to be told it’s a holiday and I must call next day. How can you charge me a whole month of R25.00 when I have upgraded a day later. I am a pensioner and the fact that we already faced an increase then this also gets added to my account. I sent an email to your complaints department Asking them to reverse this only to be told my next account will be end of May with the new contract amount. What I would like to confirm is do your complaint department understand my complaint. I want this R25 reversed as I never used my phone out of contract for a month, how can you charge me for a month out of contract?? I will go to the consumer council if it’s not reversed. I hope you understand that!