You're mistaken. Everyone who goes to Purgatory goes to Heaven. No one in Purgatory goes to Hell. If they are being purged of their sins, why would they need to go to Hell. Obviusly, if they are purged of their sins, they are "clean" enough to enter Heaven.
Boy, I'm not doing too good on getting my point across am I?
Of course your right, I'm obviously not doing the job right.
I'll try one last time.
Most people go to purgatory. After their "sentence" they go to heaven.
Very few people go straight to heaven.
Alot of folks go to hell, and they stay there.
My apologies for butchering Our Lady's words.