This is from a very old (in internet terms) post from 2016, which can be viewed here. My solution was extremely simple: hop on a plane to Fiji and live there peacefully until the day the snail shows up to kill me, then accept death. Immortality is not a blessing, it's probably the worst curse that could ever be placed on someone.
The obvious solution would be to trap the snail in a box and seal it away. Or pay someone to trap it for you if you don't want to risk getting too close to it, you have enough money for that.
Okay first you have to have timbs, it follows you right? Let it follow you to the basement door open it run inside then juke the snail and kick it in! Lock it and board it up!