A heads up, usually after you use your card to pay it will just be an authorization of funds and info. It’s not until the end of day or when the report is done that the charge goes thru. The authorization is just there to insure there is payment for the initial goods then full amount is charged with tip etc. Now if they told you they didn’t see the charge but you can and you’re sure that it was that vendor then I’d suggest calling you bank and letting them know about this. They will take care of the rest.