Rediff delivered a partial delivery of Tupperware product

Hi,

I had ordered 2 Tupperware lunch kits From online rediff shopping. But they delivered only 1, but on the cover written that 2 quantity.

When opened i could find only one product inside.And complained to the customer by dropping an email and by calls.Past a month.

First when i raised a complaint they told that they would deliver me the product in 5 working day.I called up after 5 working days. And they where telling that no product and they will refund me the Cash withing 12 working days.But now 12 working days has passed, and no refund.

Please take action on this complaint. and give me a solution.

Thanks in advance.
Smitha