Worst customer service

Paid for WiFi with MTN for the balance of March and April full month. Courier came to deliver 3 days later. Refused to give my WiFi even with proof of address, seeing me in Peron, giving my ID and scanning my fingerprints 3 times they were not convinced I am who I am. Been battling daily since with MTN for some kind of resolvement. Their customer service is the worst! Why must all the communication come from me and nothing from them trying to rectify the problem?!