Bad Billing Practices! Only deducting on 4th of next month!

I have a fibre package through Afrihost as my ISP. I had repeatedly asked them to deduct the money on 25/26th of each month when my salary comes in, and they keep deducting on the 4th of the following month which makes ir harder for me to plan properly as my debit orders all clear by the 26th, and this is such an inconvenience for me! Going forward I will cancel all payment processed after the 26th, and make manual payments, in fact Il block them for good and wont allow them to submit any debit orders on my account cause this is disrespect of the highest order cause ultinately this is my account and they wont dictate hoe I should run my finances, they will fit or pfff off! Get yourselves inline now, otherwise no more debit orders for you, I will process EFTs manually every 25/26th of the month, atleast then ul will get your money way earlier than the unacceptable 4th! Thanks