Bad Service / Poor quality phone etiquette

I have a major complaint with regards to Capfin who insist that they will take a debit order off before my actual pay day. I have told them on numerous occasions that I cannot guarantee that if my pay day falls on a weekend that I will be paid on the Friday as I do have control over the payroll department at my company.<br> <br> Now I get an sms to say they will be taking the next payment on the 22nd May. My normal pay day is the 25th.<br> <br> what do I do now as there will be no money on the 22nd as the 25th is a normal working day and my salary will only be paid on Monday on a normal working day - it is not the weekend. <br> <br> it does not help to phone as the personnel they use in their call centre are argumentative and talk over you and just say they cannot help you. what a nightmare place to have to deal with.