replacement

few months back I bought a beam and a sub mini after using the sub mini a few times it completely stopped working so I set up a return and a part arrival of the new speaker come to find out it was refurbished and not working correctly after reaching out to Sonos on why I received a refurbished speaker first, they said it was out of warranty which was incorrect. Then they tried telling me that I bought a refurbished one from Best Buy. They came up with a serial number that was wrong and claiming the Best Buy sold me a refurbished one then they told me to go to Best Buy to return it, but since I don’t have the original speaker, they won’t accept it and they claim that the speaker I bought is not refurbished because they don’t refurbish Sonos products . The tech that I was on the phone with a Sonos. Asked to see my receipt which I was on camera phone with him and showed him the price of $450 with a sale price that day of $425 plus tax and he still insisted that they sold me a refurbished one at Best Buy and Best Buy has a 14 day return policy and if it’s not the original product they can exchange it now I’m stuck with a $450 footstool and I read some comments online the Sonos has a habit of replacing you speakers with refurbished ones to me. This is not a good way to do business and when asked to talk to a manager, you get the same runaround. Sonos, it will be good if you stand behind your products. Now I have no choice but to go through attorney general to try to have this problem, resolved and looked into.