Terrible/Horrible MTN Contract Customer Care Line

My contract phone has been deactivated the whole day(08 June 2020), as if I didn't pay my installment, MTN has a debit order arrangement with me(22nd of each month) and I don't owe them anything, because they did debit last month(22 May 2020), now my still off and the worst is that I can't even get through their call center, I tried with different phones, but no luck. It rings for at least 30 minutes and then they say I'm in the wrong department, then they transfer me to the contact department, but then it rings once and then it will say not available.