Incorrect data

I took out a router with MTN sometime in March, and I've been getting the incorrect data. I have been complaining for several months now through their call centre, emails and twitter and no one is helping to explain why I've been getting the incorrect data. I don't have access to a MTN number anymore to call their call centre and I cannot waste my airtime to be put on hold for hours. They are not answering my emails when I want them to send me my settlement fee so I can just cancel their useless service. All I want is my settlement fee and we pathways I have never received such poor service in my life.