deduction doubled and terrible network connection

On the 29th of Jan I paid an outstanding amount on my account manually as it was overdue. I then went to the Telkom store in Cresta, where the consultant faxed through my proof of payment and I asked whether my acc wouldn't be debited twice she assured me. However on the 31 St of January I was debited for an amount of R1550. 00 as opposed to the monthly debit of R806. I tried calling the branch the lines never go through, I called the call centre and asked for the nr the consultant said the nr wasn't listed. The consultant took down my details but there was no ref. I took to twitter the feedback has also been agonisingly slow only to receive an email from billings on Feb 3rd 2015. Again I'm still expected to do their job for them, I was advised to draw a bank statement and email. How is this my issue, when the debit goes of they do not request a statement. On the 2nd of Feb I was back at the Cresta branch only to receive no help and extremely carefree consultants. No one seems to know how to do their job on top of it all the year that I've been with Telkom I've had the worst network ever. Appaulled, annoyed and irritated is what I am I hope HelloPeter can help.