Does this store have a straight talk representative?

Yes

They have people that can help you with straight talk

They do have a rep for straight talk but not every day. But most in the electronic dept can help.

I do believe to talk to a straight talk representative you have to call or text them I had straight talk for 5 or 6 years I have never met a representative

I'm not sure as I don't usually shop in the electronics section. You could call & ask.