ANNOYING AND FRUSTRATING

I a so so annoyed by Afrizin/ MTN customer care In January I wrote email TO MTN and I was td that my contact it is on pending and I still have that email. And I told them how come it is on pending but the statement it's issued that I should pay, they did not respond now they have blocked my number saying I should pay 438 of something I do not have which is a home WiFi and they're busy with email throughout the night