No refund, *****ing my money and charging interest on ****** money

I made an online purchase to the value of R914.93 on 06/08/2018. Later that day, I contacted the call centre and requested the purchase be cancelled. They cancelled the purchase and advised that the amount will be returned on my account within 24 hours. 24 hours later, 07/08/2018, I checked my account summary online and no refund was done. I contacted the call centre and they advised it take 48 hours. Another 24 hours later, 08/08/2018, the refund was still not proceeded.

Today is 4 working days later and still the amount is reflecting on my account. This has no influenced my installment as their SME run date has passed.

I want my account refunded ASAP, I do not care about working days and hours. I have given these people 4 working days to get this thing resolved but nothing.

I want my credit bureau profile to reflect the correct balance on this account and I want my installment recalculated as currently I have a R350.00 installment on a balance of +- R700.00.

Communicate with me via email. DO NOT CALL ME