MTN appalling service. I will never renew my contract.

I have a contract with MTN for 25 years now. MTN does not value its customers. My service was disconnected a day after I received my monthly top up of data and airtime. I have a contract that enables me to top up yet MTN has ********ly terminted my service. I work for a not for profit organisation and we are working during this time of a humanitarian disastor in our country. This is shocking service by MTN and it has made it impossible for me to do my work. I sent an email to the customer and got a reference [#***]. I tried accessing my MTN app and it is not functional. I tried calling all morning and I am put on hold and the line goes silent.