"I'll try and finish the job"

Horrible.

"I'll try to finish the job"

Nice, and better even in a colloquial sense, as:

"Will you finish the job tomorrow?"

- can be answered with:

"I'll try to"

go, come and send are different, my Kiwoid and nuncloid friends - "I'll try and do it" simply doesn't make sense. As Sparteye says and Helen the Yodic implies, you try and succeed (in which case the job is done) or you try and fail (in which case the job's not done).

Steve Harley's "Come Up And See Me", however, isn't bad English. It's a request for his love to come up to his part of town, upstairs flat, whatever and to see him whilst she's (ho's ??) there.