Telkom refuses to help me migrate contract as per agreement

My wireless broadband contract was due for an early upgrade in Feb 2022. When I went to the store and told them my router still works fine and I don't want to replace it yet, I was told I can take a sim-only data contract because with such a contract I can migrate to a different contract after three months - I don't have to wait for the 24 months. So I took the unlimited data sim-only contract

At the end of the three months, I went for my migration, but I was told that my contract does not show duration, so changes cannot be made. I was asked to contact customer care for help. The customer care agent told me that my unlimited data contract has only been active for less than a month. I told her that was impossible because I took this contract in Feb. She escalated the matter for further investigation.

A week later I call customer care and I was told my contract is a month old. But this time, the agent looked at my billing account and realized that I have been paying for unlimited data since end of Feb. So it can't be that my contract is a month old. So she also escalated the matter. Of all the escalations that were done, not once did I receive a call back.

I called Telkom Head office in Midrand a week later and the individual told me that the reason my contract shows as over a week old is because I did an early upgrade of my old contract and the actual new term had only started. I asked about the three months sim-only contract migration, the individual said he will refer the matter to retentions department. Now over seven days later, I am still waiting for retention department to call me

The painful thing is that I told them that I cannot afford to pay for the unlimited data contract anymore (about R849 per month) and I was glad that I could change it in three months. Now we are at the end of the forth month and there are still no changes. I don't know how Telkom will find the money in my account when they debit at the end of this month.

I called the guy from head office today but there was no answer. I went through to reception and she told me she will send the man an email asking him to contact me as soon as possible. I too sent the man an email but there was no reply.

In total, I pay over R1800 per month to Telkom for all my contracts and this is how they treat me