Yepme.com — delay in refund

I used to purchase a lot from yepme (And even got refunds for cancelled orders in the form of coupons) but last time, i ordered twice on yepme 8 months ago and paid online. The order wasn't delivered for 10 days and suddenly one day, the order had been cancelled. Numerous calls to the call centre (Where the executive never answers the call inspite of half an hour waiting) and emails, no refund (No coupon/direct refund) has been initiated. Just an email every month, that the complaint has been forwarded to refund department and your query would be solved.
Haven't purchased from them anything since then.
This is how companies lose their customers.