VERY VERY UNHAPPY, ANGERED CUSTOMER!!

Signed up with Rain 15th of the month, the sales person informed there would be no problem with the debit order to be moved to month end when I receive salary. its been 5 months now. I have multiple attempts logged on to my account and requested the debit order be changed to the the 30th. still the debit order runs multiple time from the 15th of each month. from the 17th of every month I have my Wi-Fi cut then run days on and off until month end. I have you know when I log on to my account it states debit order run 30th of the month. I also have requested one of my sim cards have been miss placed that it be cancelled and a new one issued and couriered to me... 3 months later...still nothing. I think Rain has the worst customer service there is. No follow ups to clients, no communication... and my name and bank chargers going for **** because of the constant debit order being run on multiple days from the 15th of each month. pathetic... So when does this get corrected, when do I receive my new sim card (part of the promotion package) and when does the unnecessary bank charges and Wi-Fi cuts STOP!!!!!! VERY VERY UNHAPPY CUSTOMER