Disgusting Service after 28 years of being a loyal customer

I have been a loyal customer of MTN for 28 years and this is the service I get.. I was due for an upgrade a year ago and told them my devices were still fine at that stage and was advised by MTN Simmonds Street to go on month to month basis and I have been charged those rates. Now I need a new device and call on the branch and get told Mobile plus MTN in Durban has put me on a 24 month contract. They now need to send me a copy of the recording which will take 72 hours ( I have been waiting already for it for a week). If i went on the 24 month contract how come my rates are the same first of all. Second of all how does this make business sense work. Manager in the Branch just advises she is unable to do anything and that is that. !!! I have 2 contracts that cost R300 now want to upgrade to two new contracts with devices that will cost R800 and they have a problem. Really guys. I have tried to phone the call centre on ***. No customer service. They answer the call and put it down before you can even speak. Then you get thru and they absolutely useless . Totally disguised in the service of MTN . Just so very sad as always promoted them and stood up for them - well things have sure changed my opinion. Reference number MT ***-1.