Capfin debits on any random day they please

I had a loan with Capfin and we agreed that they must debit the payment on every last day of the month for the duration of the contract period.<br> <br> However they just debit on any day they wish , sometimes they would debit twice a month, they have just debit today. I told them a number of times that this is a breach contract, however this conduct just only escalate. This started in June.<br> <br> I feel they are in breach of contract