Inefficient and Incorrect!

I purchased a flight ticket to Israel early in 2020 where I had to redeem it as a voucher because of the lockdown restrictions during the course of 2020. In Jan 2021 I had requested this a refund as I will not be travelling during the period of validity of the voucher. I received an email and sms notification confirming the refund however, all that has actually happened is a duplicate payment on my credit card???