Hi!
>what happens to non-believers when they die from your/your religions point of view?
In In the Bahai' view, everyone is judged according to his/her faith and works, but the result is in fact largely self-imposed.
Heaven is spiritual nearness to God; hell spiritual separation.
And whether one has or has not nurtured oneself by acquiring spiritual virtues (and then acted accordingly) will determine one's status in the Next Life, regardless of what religion one espouses.
Those who have grown spiritually will experience nearness to God; those who have not, relative separation--and these are indeed the definitions of Heaven and hell.
That said, no one will have to remain in hell eternally because God, through His Love and Mercy, will eventually aid them to grow and draw closer to Him, so that their station will ultimately also be close to God.
All the best,
Bruce