Capfin intentionally ruining my credit scoring

I would not even put the 1 star but it would not allow me to continue to write till I select it. They are sooo horrible. I work for a company that Uk regulated which means SA holidays do not affect or getting paid early in December does not affect me. I called Capfin’s call center because I don’t want to miss a payment and they are saying they cannot debit my account on the normal debit date because it’s December. Which means they are going to be taking money that’s supposed to sustain me till the 28th of December. They don’t even want to appreciate the fact I’m calling to ask if they can debit my account as normal now if they debit my account, I will be forced to reverse the direct debit because they will be taking from my rent money. This will ruin my credit scoring I wish I never used such an inconsiderate company.