Debit Order

Goodday<br> <br> I just went through my bankstatement and saw that there is a debit order and when i try to phone them to tell them debit order must go off on the last day of the month there is no answer i google Kismet Investment and there was a different number I phoned the number and they dont know anything about this they say that they dont know this people. I did receive a tablet and know i need to pay but if you agree on month end for debit order why the 25th that will give me a bad credit record please assist