Rock auto issues....

I was looking at some brute force U joints through them, 10% off from manufacturer, and had a 5 % off code from Rock auto. Came up to 36 bucks for two of them which I thought was a sweet deal compared to local. Got an email on the 20th day and everything was " shipped" their definition of that is boxed, and Track # generation. Expected date of receiving was supposed to be the 23rd. USPS tracking number shows they've never even been picked up? What the heck? Anyone else ever have similar issues with them? Thank You!
Well my old driving instructor was a regional rep for rock auto and he always had the idea that they were the best parts warehouse on the planet.(of course he did) But, the first time I used them to get a gas tank and pickup, it arrived within the week, and It actually shipped when It said it did. So I guess its a case-by-case basis.