Not at good for cheap chinese products

I purchased usb vaccum cleaner for my car. The item was shipped on time and was at my doorstep within a week.

But the Rs. 399 vaccum cleaner never ever worked. I tried reaching them through phone support (it was not easy to get their number) but to no avail. They asked me to lodge an online complaint.
I lodged the complaint. Asked for refund / return.

But they only gave absurd answers that it does not have warranty / talk to the seller etc.

After around 20 days of daily emailing, they aggred for replacement and asked me to courier the package at my own cost. I asked about the courier charges and they told me that it is to be borne by the customer only.

I shipped the product back to them. But they never gave me replacement. Instead they refunded cost of the vaccum cleaner to my bank a/c.

I had to suffer loss of courier charge. Now i have made a rule never to buy electronic products from tradus.