KFC is up to ****

I had placed an online order with KFC via the mobile app in May. My order wasn't processed but the money was deducted.

I contacted KFC several times via Facebook and Email, they had offered me a voucher which I tried using and it was not valid. I then contacted KFC again to notify them and asked them to rather refund my money. I kept being told the refund will be done. It's now 2 months and I still haven't received my funds.

How many months does a refund take to proceed?

This is an absolute inconvenience!!!