Home Loan Repayments

Monthly home loan repayments were due to come out of my account but I had insufficient funds in my account so I called BNZ who changed my payments to weekly rather than monthly which works much better for me. The monies still came out of my account that night, but it has never been put back into my account… it’s really worrying me as the weekly payments are due to start coming out on Friday and, even with my pay in there, I won’t be a able to service these repayments (or eat next week). Will the monies be returned to my account before Friday?
thank you in advance for your help