Bad customer service

I took out a personal loan with Woolworths in December 2019. February the 20th I paid my instalment at one of their stores in Menlyn Pretoria. On the 28th February the instalment went off again. I called on Saturday morning and spoke to a lady Called Noma who told me to send a bank statement reflecting the payment and debit order. This morning I sent them an Interim statement with both payments reflecting requesting for a refund on one of the payments. reason being the latest statement I have for my bank account only shows transactions before the payment was made.

now I received a response from Woolworths queries department saying I must send a bank statement that has a bank stamp. I feel that I am being treated unfairly and I am being inconvenienced because both the payments are reflecting on their system.

This is the worst treatment I have received & right now I wouldn't advice anyone to do business with Woolworths because the bad treatments they give their customers.