SUSPEND ACCOUNT MONTH END WHILE DEBIT ORDER IS ON THE 15TH EVERY MONTH

They did not debit on the agreed date and decided to debit 4 days later and now that is my fault. called them then made minimum amount they requested on the 29th January because they suspended my account, waited 48 hours then my account was operating again. today is the 5th February my account is suspended again. mind you my debit order is on the 15th and their rude agents say I should wait more than 11 day before I can use my account again. couldn't they waited for the 15th and suspend my account if a debit order doesn't run through. i have been with Telkom for more than 5 years and haven't missed a single payment but this will lead me to change service provider if I will be treated this way.