I just looked through my credit card transactions for the last six months and can't find where I was debited for this trip. I also looked at my SkyMiles account and didn't find any redemption of miles. I buy all of my Delta travel on Delta.com. I once used Travelocity but it didn't work well with Delta. With Travelocity I could never check in online or use the Delta kiosk. Travelocity still works well with the other airlines.
If no miles or money was deducted for this trip I can live without it. I am just glad it wasn't some special occasion involving lots of other people and nonrefundable ground arrangements. Something must have gone wrong after I clicked "purchase". It even let me choose my seats.
If there is a programming glitch I just hope they fix it even if they don't acknowledge it. It was scary for me that I went through all of the usual motions of arranging air travel and then two weeks before going - it isn't there.