I ordered from them and had a debit order of R623 on my account and the balance on my account as at the 20th September was R327 and they debited the whole amount of R623 and on the 22nd September I called and requested that they refund me with the differe

I ordered from them and had a debit order of R623 on my account and the balance on my account as at the 20th September was R327 and they debited the whole amount of R623 and on the 22nd September I called and requested that they refund me with the difference and was told it will take 48 - 72 hours for the refund to go through. And never received anything from them. Then on the 27th I send an email with my bank statement. They respond to say it will take 48-72 hours for the refund to go through. And today is the 01st October and no communication from them.