MTN Accounts a mess

iPhone 5 handed in to MTN for Repairs which was paid for on 28 February 2016. After following their instructions to the letter, I paid the full amount against the Job Card Number JC471117 on 28 February 2015. After 5 days I heard nothing. Called on 3 February and held on for ages. Then told that payment has not been made. Checked with agent that all the details were 100% correct. MTN asked me to send proof of payment to [Email Removed] Agent told me today that payment is still not reflected. Got a USD reference number : *** and apology for inconvenience but no phone. Cancelled all contracts with MTN after 22 years end of last year because of the same problem. Accounts paid and proof of payment sent but they cut my phone 3 times. Took 4 months for Accounts to wake up that I had paid 4 months ago. MTN is in a mess which is why they deserve the Nigerian disaster. Change to another service provider as soon as you can.