I had a similar experience at the East Windsor, CT Walmart about a year ago. Purchased online a handful of small items that I preferred to have delivered to my home (like Amazon does). For some reason, I couldn't do that online, so I was forced to drive to the damn Walmart to pick up these few items.
Waited and waited in the designated spot, and it wasn't even that busy. The young people bringing out the stuff to the cars were nice, but the service was chaotic and slow.
I'm not a fan of curbside pickup at Walmart, to say the least. Just deliver the stuff to my house!
Boy my experience has been just the opposite. Great customer service and they delivered to the car in minutes