Worst network provider ever

If i could give ZERO star i would. Im realy getting tyred of mtn and people that can mot do their work. Below are mesages i got from mtn after i requested on 25th july for my debit date to be moved to end of every month,and i got a job that pays me last day of every month .

I recieved the following mesages

Y'ello! Your MTN debit order of R 455 for August was unsuccessful. Please call us on 083135 to arrange a payment. Your balance is R 1376.5. Thank you.

Y'ello! MTN hasn't received your payment. To stay connected, please pay R 466.5, in-store or via your bank, using billing profile BA*** as a reference. You can find the banking details on your invoice.

And on my mtn account it says overdue amount over R1300!!!! Why so much!!!! Yet every month i paiď. Never missed a payment last year i had the same problem of my acount being blocked just because someone didnt do their job , also had my date moved. And because it didnt go off on the old daye my account was blocked a few days after. I NEVER EVER HAD THIS PROBLEM WITH VODACOM. THEY ARE BY FAR THE BEST.

Now get another mesage today

Y'ello! You won't be able to make calls until you pay R 466.5, in-store or via your bank. Use billing profile BA*** as a reference. You can find the banking details on your invoice

Im tyred of this!!!!!!

If this is not resolved, i wil destroy my sim and never ever use mtn ever again!!!! And i have been sending mesages since yesterday afternoon,and whole day today and no one replies or update me on the matter