rude staff

they were suppose to debit their money on the 28 April 2015, but they didn't. I called them on 084140 & 084145 the next day to let them know of this and I was adv that it will reflect on their system in about three days time. after three days still they havn't debited their money and now im getting sms's telling me about returned debit fees that ill have to pay. I called them again and was told that they did a re-submission of the debit order, next day still no debit. I recieve the sms telling me about my outstanding account. Call them again and this time the person I was talking too tells me that \what do you want me to do ?"in the most redu attitude....so please tell me what am I suppose to do because I can't go to the bank and deposit the money myself (that is why debit order are where right?!)"""