Check out line response time

Could it be possible that since the store was likely somewhat busy
(since there were lines at the checkout) the the manger was actually
out on the floor helping instead of answering a phone?

Maybe if you would have called the normal number instead of the
manager's office the service desk would have been able to page the
manager. Its not like they sit up in the office all day waiting for
phone calls.

Could you, oh, I don't know... shop elsewhere?

I'm thinking that if you want exceptionally fast, great service,
Walmart isn't really the place you should be shopping. You can't
expect Nordstrom level service at rock gut bottom level prices. But
that's just my perspective on the universe.

??????

HOW can you "spend money" while standing in line?