Today I was walking at the mall and a very cute girl trying to convince people to get credit cards aproached me. This is how it went:

Vendor: "Are you in a good mood sir?"
Me: "I always am"
Vendor: "Then can I talk to you about the something card?"
Me: "Sorry, I really don't have time. But we can talk over a cup of coffee, later"
Vendor: "Sorry, we do not accept invitations from costumers"
Me: "That's too bad" and walked away.

This happens constantly with credit cards, savings plans, insurance, time shares, travels... And although most vendors are male, older, or just unintersting there is the ocasional HB.

Does anyone has experience in this kind of pick-up? Any tips?

That seems like a pretty hardcore rejection, man...

The fact you're focused on this one girl enough to actually GO BACK to the mall and try to pull her again is the problem. Girls are everywhere... Many will be more interested in you than this one.

There was nothing really wrong with your line - though it was fast. You went right from her giving you a sales pitch to you asking her out and she knew nothing about you. Not saying she'd have said yes if she knew your name or what your favorite color was... but it may have helped.

No, I'm not going back. I meant in general. If a hot girl approaches you with a sales pitch how do you turn that into a pick up?