Coolwinks — coolwinks not refunding amount against product i cancelled

Address:

ghas mandi, khara kua, dausa, Dausa, Rajasthan, 303303

Site name where i purchased sunglasses: coolwinks.com
Order id: cw[protected]
Order placed on: 22 august, 2019, 20:31pm
My contact number:[protected]
I purchased a sunglasses on coolwinks.com with adding a promocode of 100%cashback. I read carefully terms & conditions what were in 4-5 lines at checkout page and there was not written that they'll give 100% cashback in form of any coupon code for shopping again on same site instead of 100% refund in same mode of payment what i paid to them in. After 2 mints i came to know that sunglasses is small for me so i cancelled that. Next day i contacted to their customer care to know refund status, they gave me a big shock by telling me that you won't get any refund because its written in terms and condition and told me that while you were cancelling the order, there must be shown a message that "you won't get any refund regarding this cancellation". But reality is that i didn't get any message like that. If i got that message, i am not fool that i would have cancelled that order after reading that message. Coolwinks should have told me in a proper way before cancelling the order that i won't get any refund against cancellation. So i could got informed before cancelling.
Desirable resolution:-refund my money in form i paid to coolwinks.