standard not willing to help with their mistake

went to N1 city bank to close paid up loan account.. they close the wrong account..the bank does an automatic transfer to close the incorrect bank account.. i went bank to have it reversed within an half an hour of my initial visit after there were no funds in my account for monthly groceries.. they say the lady that helped me will phone me back.. still waiting her call and the call center is unable to assist me. no feeback on the request reference can be given..now its month end and i have no money for the rest of the debit orders and food - which will affect my credit score and my living needs of my family.