I don't know what is going

This is the second time I come here. Last time I thought everything had been sorted out but no. Per agreement with the collections lady with whom I spoke to I was supposed to pay last day of last month and 1st day of this month. The 1st day was deducted and I patiently waited for the next deduction. I went to the bank today to see what the issue was and I see you tried to debit double the amount (which I don't have because of other obligations) never was it mentioned during the phone call that I would pay double the amount. I'm not running from paying but Honestly I pay so much because that's all I can afford and if you take triple the amount what must happen. I don't know what to do any more. I really don't know