[Resolved]  eBay — return coupon money can not use multiple times

Address:	700030
Website:	www.ebay.in

I had return aoc mobile and got return money rs 1490 as a coupon form. This was my money which i gave as a cash during purchase of the mobile.
Later i purchased a saree of rs699 among my rs1490 using that coupon form of my money.
My balance money is 1490-699=791
This is my balance money of cod but as a coupon form.

Now ebay cust care says i can not use or get my rs.791because coupon is one time useable.
My questions are-
1. My money why i cant use. Its not free coupon.
2.in the coupon sms only last date o[censored]sing coupon was mentioned but not mentioned "one time use".
3. During the purchase it was not mentioned "one time use" coupon then i could order my full amount.
4. Is there any fool who will loss his own money willingly?

What i want:
I need to use my rest of the money rs791 within 3 days otherwise i have to complain consumer forum, police, it crime cell of govt., rbi bank, banking ombersment, press-news channels and news papers with all call record and emails.