Quick to take money and slow to refund!

It took so long to get through to an agent, then had to keep calling after each one misdirected me. After the 3rd time calling I finally got through to finance department who also didn't help! I changed banking details early in April and went to the store to notify them - Kylami corner. The agent said my new banking details will not reflect until next month and INSISTED I should make a direct payment end of April. Then come end of the month I make the payment and BOOM they take debit order also from the new account! now for them to refund me is a mission. Today is the 10th of May and still no further communication. We all know it's tough times for everyone and they won't even repay me with interest for the 15 days! I am super annoyed, they went and allocated the payment to May - who pays for two months in a month!!! I am so annoyed, I won't lie.