Realy bad service

<p>I have never had such bad service from a company before. I am a contract client of Mtn for over 20 years with 4 lines. I always paid on ********** 185 which is now pay as you go.My wife and I are now battling with Mtn about a account payment of R3000 for many months.we have send e mail prove to how many people there that we paid.they keep on telling us that it is not paid.we even put it on facebook.just nothing.what more must we do.is that the way they service there old clients?they don't come back to us.no feedback.not even the supervisors or managers after we send how many e mails. We also have been complaining about realy bad signal service by us in evander for nearly 3 years.nothing.</p>