Charge 3 unresponsive

[Taro1823]

So one day my charge 3 just started vibrating randomly without my touching it. I could also see that the display was also freaking out as if an invisible finger was just swiping and tapping everywhere. I couldn't get to the restart button in the settings and clipping it into the charging clip thing didn't stop the fitbit from going crazy so I decided to just let the battery slowly drain. 

Now it's completely dead when off the charging clip. While charging, the display is always black but if I touch the button on the side, it vibrates constantly and only stops vibrating when I let go. I've tried holding down the button to restart it. The help page on how to restart the fitbit tells me to hold the side button for 8 seconds, but I've tried holding it for more than half a minute but it just keeps vibrating non-stop.

Is there anything I can do or is my fitbit just completely stuffed? This first happened a month after the warranty expired unfortunately so if there's no fix I can't get it replaced.

Thanks in advance.

Moderator Edit: Clarified subject

[Taro1823]

Sorry I forgot to mention that it won't sync as well.

[AlvaroFitbit]

@Taro1823 Welcome to the Community. 

Sorry to hear about this and thank you for troubleshooting this issue. Since the issue persists I suggest you contact our Support team for further assistance. The best way to get help for this problem is to chat with us online or give us a call. Click here to get connected.

Hope this helps.