Walmart IMPOSTER scam

Person calling from 704-455-5742 left message on my phone that they were Walmart and trying to verify purchase "charged on a Wlmart account registered to your name and phone number. If you did not autorize tihs purchase call us immediately at 857-605-9401 before we dispatch the order." I called Walmart and only dealt with their AI, but was told Walmart would not do this and that neither of these numbers are identified with Walmart. I looked up the original call number and it was your site that idenfitied it with a company in North Carolina and the incoming call on my phone said Harrisburg, NC Hope you can help others and maybe even identify who is doing this.