Unhelpful and not willing to escalate the issue

I am outrage by the level of service I have received this evening by the MTN call centre. Been a customer for over 17years now with no defaults in payments and this is the level of service I get from MTN . Actually regardless if a person has been a customer for 6months, this level of service is unacceptable. These call centre people must realize if it wasn't for MTN *********** their customers, they wouldnt be getting a salary!!!! I am livered and beyond annoyed and its unbelievable that even when I had asked to speak to a "manager" he too was not even prepared to help me escalate my issued. I will definately be rethinking when my contract is due to expire!!!! CellC seems to be a better option and they way to go, from what hear other people say. I pity MTN and their customer call centre consultants. If they just rather look after their customers and not take them for granted after many years of loyalty!!!!