Calling ahead before a service appointment is supposed to save you time. But showing up with a reservation doesn't always mean someone’s actually ready for you.

One woman found that out at her local Walmart Auto Care Center, and now others are saying that you should steer clear of Walmart’s car care altogether.

Walmart Auto Care Center Visit Gone Wrong

In a trending video with more than 20,000 views, content creator Madz (@madzrocks_) says she called ahead to a Walmart Auto Care Center for an oil change and was told to come on in.

"I called ahead, and they said there was nobody in here and they could get me right in," she shares.