Poor Service - In human - Don't Care

I had an account with MTN account from 2001 , in 2 ********** account was handed over to Norman Bissett & Associates ( due to me being unemployed at the time ) when I found employment I made a payment arrangement with them , last debit was in 2016

Last week I checked my credit report , to my surprise with account is still open with a balance outstanding

From Monday 25.03.2019: I’ve been on the phone , with both Norman Bissett and MTN Call centre

@ Norman Bissett : Reference no. ********** , Contact Number: ********** • They confirmed I had an account which was called back by the customer( MTN) in 2016. They have no further records

@ mtn , they the worst .Called the Call Centre : ********** reference no.: 159538 and sent an email as instructed • To date I had no feedback ( turnaround time 24- 48 hours passed) • There is no direct line to contact the legal department , how is one to sort this out if you can’t speak to someone , an actual person • And not forgetting you hold for hours with no service

My request : • I want a paid up letter and my profile updated on both ITC and Experian, as this debit prescribed from Feb 2016 to Date • If they say I’m owing , I want a detailed recon and away forward

It’s been 3 days with no answer from the service provider .

Just to sort this out , that I have to go to this extreme