Mwen pa tande ou. → I haven't heard from you.

Kouman ou ye? → How are you doing?

S'ak pase? → What are you up to?

Mwen pa tande ou. → I haven't heard from you.

Mwen pa tande w menm. → I haven't heard from you at all.

Mwen pa wè depi kèk tan. → I haven't seen you  in quite some time.