Cancellation Refund not received even after 45 days

Location/place: Bangalore

Name of company/service: Timtara.com

I had placed an order in timtara.com website for a MicroxMax tablet work Rs. 5999 on 5th July and the order no. is 10283280. When I came to know that the delivery was taking longer than I expected, I cancelled the order on 11th July. I also spoke to the customer care and they told me I will get my money back within 20 days.
It has been over 45 days now and still the status shows ‘pending refund payment’.
Last 2 week I spoke to the customer care twice to inquire about the status and they told I will get it back in 2 days. When I wanted to speak to the supervisor the person said he is busy on another call.
Today again I called up the customer care and they told me that the refund is pending and it will happen. I wanted to speak to a supervisor, but he told everyone is busy. No one is taking any ownership and assuring by when the refund will happen.
Please help in getting back the money.