Poor service by Markam

I made an E-gift voucher purchase online through the Bash Markam online portal. I loaded a R1000 to purchase a R899 item. The voucher was deducted but the purchase was not successful on my end. I called their voucher department on Monday and I was advised my voucher will be credited back to my account within 24 hours. Till today I have not received feedback regarding my voucher.