debit order date and bad service to add loan

I have a loan which I asked from the beginning to do not put a debit order through before my salary date which is the 25th. I requested SEVERAL times that the debit order date must be changed to the 27th as my salary is not always on the 25th, sometimes a day or 2 later. I always get this response of the debit order seeks when there is money in your account and then withdraw. This morning on the 24 the , please note my salary day is the 25th, the debit order went through again. This caused a lot of trouble with my budget. I am so sick and tired for over a year and 6 months I asked them to do not withdraw before the 25th. I do not understand why all companies can have a fixed debit order date but they always got the same excuse of the debit order withdraw when there is money in your account. I app**** 15.3 for an additional loan which was approved. I was told by a consultant who rush everything off to send 3 months paysheets which I have done. Just to get a call from another chap, they need my bankstatements. As I was off to another province i told them to cancel. This is the utmost bad service I ever had from a company. The consultants give different requirements?????