Disgusted in Samsung's Customer Service

I purchased a fridge in Nov/Dec 2020 and received Samsung Vouchers which could only be used for online purchases. I then purchased a microwave in April using the voucher but unfortunately had to return it as it was not suitable. I contacted Samsung and they collected the microwave but I have still not received my money back or a voucher to the value of it. Countless emails have been sent and I just receive the same response every time saying they are awaiting feedback on the matter. We are in July now and this issue is still not resolved. Absolutely disgusted in Samsung's lack of customer service in resolving this issue.