Advay — received old & used product. not heating properly

Address:

Moradabad, Uttar Pradesh, 244001

Hello
I ordered advay electric massager velvet heating gel pad " from amazon. The seller has sent a used bad product. It looks old & not heating properly. I had ordered this same product in brown colour in 2015 from amazon, it was new, heated very nicely but when i ordered again on 12 th dec 2019 i received an old product in black. The material of the product is not good, the black border is coming out, it is extremely low heating. I wanted to email amazon earlier but i did not have recharge in my phone that is why iam late in emailing. I would like to exchange/return, refund my money. It is not at all heating properly