query not solved

Regarding my previous query about my debit orders...P.ls see on record. My account was refunded after my debit order went off and shouldn't have, but when i asked the customer service agent ( who phoned last week to say i have been refunded) if this would go as a payment break, (AS I INITIAL APP**** FOR) she said no, i am now in arrears and the collections department would now call me and i should make arrangements with them to pay it back. OMW....WHY DID THEY REFUND ME IN THE FIRST PLACE IF NOW I HAVE TO DEAL WITH COLLECTIONS DEPARTMENT. I WILL NOT DEAL WITH ANY MORE CUSTOMER SERVICE AGENTS CALLING BECAUSE THIS IS THEIR FAULT. my ACCOUNT WILL ALSO NOT BE DOUBLE DEBITED END OF THIS MONTH.<br> PLS SORT THIS OUT. (A QUICK REVIEW OF PREVIOUS QUERY...I APP**** FOR A PAYMENT BREAK, CONSULTANT SAID MY DEBIT ORDER WILL GO OFF AGAIN 27 march. IT WENT OFF 27 FEBRUARY. I SENT EMAIL. WAS TOLD THEY WILL INVESTIGATE. THEY CALLED TO SAY MY MONEY HAS BEEN REFUNDED. NOW THEY SAY I AM IN ARREARS AND NEED TO PAY IT BACK.) ???