Jabong.com — unable to return product and get refund

Address:

700102

I bought a jeans on jabong.com and it did not fit me. So, I decided to return it but when i did so it said "something went wrong, please try after sometime"
i even changed my bank details but nothing worked.
It happened to me once earlier but I managed that time but I managed that time.
I don't know what to do next, please help me otherwise the 15 day return policy would end.
PLEASE HELP!