2 unauthorized debit orders

I must say that i am very unhappy with the service that I got from an agent today from Rain. I have a promise to pay arrangement with Rain that i made because of my employment status that goes off once every month on the 28th. So this month 3 debit orders went off which came as a surprise because i did not get any communication to expect three debit orders to go off my account. So my question to the agent was "why did that happen" and his response just blew me off. "I have no answers" was the agents response. So you guys are taking money from people's accounts and when you are questioned you say you have no answers? Please give me answers.