Bad customer service.

MTN suspended my outgoing calls and it is not the first time. i made debit order arrangements with them, they debit order did not go through last month end instead they decided to suspend me services. i called MTN customer services, i was on the line for 3 times and more than 30 minutes on every call without any assistance. it is not my fault that they did not debit my account but now i am the one who has to suffer. i am so dissapointed.