Woolworths .irrelevant request

On the 11th of November I paid my Woolwortha instalment of R1843, on the 13th of November I called Woolworths to asked for my settlement amount and "Terry-Ann" (customer care). So I paid R25715.65. Today I realisped that there is a credit amount of R1843. So I called Customer care again... to repay that amount in my bank account. The person told me to profide them with my BANK STATEMENT.... to do the refund..... I asked if I could give them an account confirmation letter from my bank.... to provide my account number.... but he insist on a BANK STATEMENT. When I asked him to speak to someone that works in finance... he told me that they would asked the same. He said put me through to someone.... but I am still HOLDING THE LINE