Moving of debit order for Standard bank convenience & NOT MINE

I just received a sms from Standard bank "For your convenience, your debit order will be processed on the 14 December18 to give you time to enjoy your family holiday...." Firstly Standard bank, I did not give any instruction to have my debit order moved. Secondly, with early collection, do i get a rebate on interest? Thirdly, last year, you guys did the exact same thing & when I queried this, you guys(Clint) said it was a system glitch that the debit order went off early. Last & not least, this is for Standard bank convenience that my debit order is going off early. To me, its an inconvenience. So Standard bank, you have been warned to debit my account on the day that I have authorised you to do this, failure will result in reporting this matter RK Moonsamy