FITNESS WATCH NOT WORKING AFTER IT WAS ONLY USED 3 TIMES

I bought a smart watch in November and it was only delivered on the 7th of January2021. I only wore that watch three times. When i tried to charge as the battery was flat it did not want to charge. I emailed the customer service and advised them that the watch is faulty they requested i take a video showing them how I charge the phone and send the box the watch was in, I did all of that and they kept on asking for more videos which I did provide to date I have not received feedback. Now they have gone mute and I am sitting with a watch that is not working and cant even return it. Can I just get my refund or another watch ?