Appalling service From MTN.

I've logged a complaint with MTN over 3 weeks ago. My account had been handed over to their legal department as they said I did not pay. I realized that I have paid the account with an incorrect reference. What had happened is I had two lines and have migrated the main line to a pay as you go. Not realizing when I made payment in May that I have selected pay again on my online banking with the number that had been migrated. When I realized the problem I called them and advised so I got a new reference number. I have been calling MTN almost everyday to no avail. The account has been disconnected since last month. Every time I call the consultant tells me that there is nothing they can do I have to wait till their legal department call me. I have asked to speak to a manager, I was placed on hold for almost ten minutes until the consultant dropped the call. I'm not getting any joy the account has been paid up to date and has technical never been in arrears it was a mistake on my side by paying using an incorrect ref number. The staff at MTN are unhelpful just as the system that they are using. I have never came across incompetence on that level. MTN your service is appalling. before you have your consultants answering the calls with " how may I brighten up your day " which is the slogan, rather take them on proper training on how to treat your customers fairly who is after all paying your salaries. I am disgusted with the service and will never recommend your establishment to anyone. BOW YOUR HEADS IN SHAME !!!!