Refund delay, I think they have ****** my money

So I waited for some items that I ordered for about 3/4 months and decided to cancel them and requested a refund. I understood the items probably weren't their fault but a week after I requested the refund I received the acknowledgment that my refund was being processed. After just over a week I emailed again about my refund and was told it will take 15 working days. A bit long but fine. However now after that 15 days I emailed again and have been told it is still on the queue for processing the refund and will only be done the following week. They have been very unhelpful in explaining why there is such a delay or why the 15 days is now 20-25. I don't know if they are hoping I spend the credit before they have to refund but this I ridiculous.