wonder hearing aid they do not honor their 30 day money back guantee las vegas. nevada Internet

I placed an order on the internet on 11/22/16 to Wonder Hearing Aid. They shipped the order on 12/4/16, I received it on or about 12/10/16. I decided to return it with the package not opened, on 12/17/16, and I called them t get the mailing address, during the conversation I was told to send it back, but he didn't have return aurthorization number at time,he told me he would email it me soon. so I sent it back 12/21/16 without return #. Then I got another email saying they would not honor theier 30 day warranty because order was placed 11/22/16 therfore it over 30days. I argued I didn't have the product 30 days I only had 6 days. They said theire company policy was 30 days from the time the order was placed, not when it was shiped.