Failed Debit order Mandate AGAIN!!!

I am absolutely disappointed in Telkom! EVERY second month there is some issue with my debit order! Which exceeds my credit limit for my two account and then I need to pay more BECAUSE THEY SUSPEND MY LINES!

So the latest problem was November. My debit order goes off the end of each month / the 1st of the next month. A debit order tried to go off on the 24th which was unsuccessful OBVIOUSLY as my salary date is the 25th/26th and it wasn’t time for the debit order to go off!!!!!

On the 29th the debit order went off successfully OBVIOUSLY as it should. Now 17 days later I get SMS’s notifying me that my lines are being suspended due to collection????

Went on the app, because per email my invoices show nothing outstanding, see the one line is almost double the amount outstanding???? How? Why? When? WHAT! Explain this to me. Anyone. I am getting sick of this! The last issue I had was in September same story and had to apply to increase my credit limit? But why? If the dates are kept as per debit order mandate then I wouldn’t need to!!!!