HappyEasyGo — Cancellation refund

Its been a month I have cancelled my ticket and have contacted the customer care more than 10 times for my refund, all I hear from them is that the refund will be done within 15 working days and its been more than a month I have not received anything yet from the company.
It would be great if I can get my return at the earliest otherwise I will file the case against the company for the full refund of the ticket without any cancellation charges.
I won't ever in my life book tickets from this website.