We apologize to hear that you're having this experience. Can you please provide us with additional information about the issue you are experiencing? How long does the battery last? Have you also tried to remove and reinsert the batteries if this helps resolve the issue? Check the steps on this link to get your remote back up and running: http://go.roku.com/remotehelp
Please keep us posted and we'll continue assisting you from there!
As previously requested by @RokuDanny-R, kindly provide us the serial number/device id of your Roku device from Settings>System>About? I'll be able to pass it along to our Support team who can assist you further.
Please be aware that your device is no longer under warranty. It's possible that the remote may be on its way out. If you need a replacement remote for your Roku device, you can purchase a compatible remote on our Products page here: https://www.roku.com/products/accessories