John 3:18, 36 - “Whoever believes in Jesus is not condemned but whoever does not believe stands condemned ALREADY because he has not believed in the name of God’s one and only Son. Whoever believes in the Son has eternal life but whoever rejects the Son will not see life, for God’s wrath REMAINS on him.”
So, there you have it. If you don’t want hell, you need to call in and say you don’t want hell. Otherwise, it will be assumed that hell is what you want.
Some conditions apply
p.s. Isn’t that a lot better than the other way around? What, for instance if you were an atheist and you HAD to spend eternity with God if you didn’t call in to cancel that arrangement? And what if you didn’t know that you could cancel, and one day you’re walking down the street and an elephant steps on you and bing bang there you are, surrounded by Christians - forever and ever. No - hell being the default is the best idea.