Finchoice don't care and don't listen

What is going on with financial institutions and banks doing just what they want to do...I have a debicheck with finchoice on the 5th of every month once there is any money in the account they just put through the debit order regardless of any other debit orders that must go through, account is up to date and they get there money every month so they just put through a debit order yesterday...funds for a debit order before theirs...Time to stop this bulls...Not the first time I spoke to them about this,they don't care and do not listen to their clients.