Help with cash genie?

basically during the summer i took out a payday loan... the loan was paid back and comformation from cash genie was recieved for this... we still found they were taking out the odd �1 here and there so i went to the bank and cancelled their tranactions so they couldnt take out more money... anyway i got paid my wages today to find cash genie and take out just over �300! leaving me with not enough cash to pay the rent! i went to the bank and they said theres nothing they can do as they authorised the payment... i dont understand this as back in january we cancelled payment from cash genie... they taken out over �350 in total now after i paid them back...help