MTN don't care

After being a loyal customer in excess of 25 years, I have had it with the poor and unprofessional service MTN gives their customers. Agents simply drop the call when you attempt to raise concerns or complaints, they also contract out many of their services to 3rd Party providers, like sales, and then have the cheek to ask their customers to deal with these 3rd Party service providers. I have a contract with MTN and as such no matter who they have contracted is not my problem, they, MTN, need to deal with them on behalf of THEIR customer, I did not ask for them to contract the service out. After my years of poor and inadequate service, albeit being a long standing and loyal client, is of NO INTEREST to MTN. I will be cancelling my contract as I can no longer deal with this company. IT IS SHOCKING, perhaps I am to old schooled thinking loyalty pays off, DISGUSTED IN MTN IS AN UNDERSTATEMENT. I would be shocked if MTN even called me to correct the matter i have, namely selling under false pretenses