No consideration and pathethic service

I have interacted with the retention departments on the 13th December 2021., in order for my upgrade to be sorted out. This was done in order for my contract not to go into an out of bundle rate. I was promised emails and calls from the person that took the query. I have since called almost every day and spoke to various agents still have not received the assistance and upgrade needed. It is impossible to escalate problems to managers as there is no one you can be transferred to. I have a string full of reference numbers and absolutely nothing has been resolved. I am now into the new billing and out of bundle and costs to me. MTN has such a pathetic service and aftermarket customer interaction. the reference query numbers are just to keep you quite and then nothing happens. It is really sad that I actually have 2 contracts with MTN and have an outstanding payment track record and this is how you get treated. MTN does not care for individuals just their money at the end of the month. Really how does one get help, maybe next step to cancel my accounts completely.......