Windows insider update failing

I left the insider program a couple of months ago but i still keep getting the updates for it, everything was fine until i got this update, Windows Insider Preview 10.0.26120.3281 (ge_release_upr) whenever i download this update it successfully gets downloaded and when i install it starts to install as same like every other update and restarts BUT when my pc starts it asks me to select a volume to boot windows from and gives me 2 options but both the options are same, termed as Volume 3, if i select the first one it boots as normal but when i check about the update in the settings it shows failed and asks me to restart, but no matter how many times i retry it remains same, And if i select the second volume which is also termed as Volume 3, my laptop restarts and asks again to select the volume to boot windows, its really annoying of getting the update pop up again and again if i leave it on its own and not download it, as well as its really frustrating that it fails every time,

and can someone tell me how do i contact the dedicated team for these windows insider program issues, because when i contacted the windows help center, they told me to contact the windows insider team