I meet this girl who works at this store. She hasent called me back. Should I go back to the store?

So I got a number from this girl who works at this store. The conversation went smoothly she told she was nervous when I approached her. She also said she was leaving to Vegas for the weekend. But when I called her for a lunch date during the weekend she didnt answer my calls. And still hasn't called me back. I'm thinking on waiting for a week before I try anything. But the cable that I bought doesnt work so I have to take it back. Should I go back to the store when she is working and ask her if she like to get together? I mean I have a reason to go back for the bunk cable I bought. But should I confront her one last time?