******** contract change

I have had a contract with MTN since 2011. I have upgraded every 2 years without any problems. I even upgraded in 2020 in the middle of the hard lockdown. I am now due to upgrade. I asked in December and was given dates in January 2022. The MTN app says the same thing. If I phone the toll free number I am also told that I am due to upgrade. But when in store they wanted me to pay just under R3000 or wait until April. I then called the call centre and was told I am only due in February. I was never informed of a contract term change. The contracts state that we can upgrade 4 months prior to the termination date. How can it then be changed to 3 months without informing me in writing? I am absolutely unhappy with this poor service. And just to make it worse the employees are misinformed and *********** in their jobs.

I really don't feel that MTN has conducted this change in a lawful manner. I strongly feel that I should be allowed to upgrade as per my contract WITHOUT paying anything is as it is stated in my contract. If they have then changed their contracts it should only be applicable from the date I sign a new contract. If they can prove that they did notify me of these changes in writing, I would understand but they can not prove it, because they did not inform me.