1991 Volkswagen Van stalled, won't start

It's 12 degrees farenheight outside. I just had my fuel filter replaced about A month ago due to the same problem that i'm about to describe. Usually my van runs great and idles smoothly, however, for the past few days the idle has been a little rough. The weather has been cold but not like today. Today the idle was rough, and it stalled once at a stoplight, but started right back up again. Then we parked it for a couple of hours, started it to warm it up and it ran for about ten minutes and stalled again, this time it will not start up. It turns over, battery is good, sounds like it's not getting gas again. The mechanic we usually take it too is closed today and I hesitate to use them again because we just had the fuel filter replaced due to the exact same situation that I just described. They said they drained and cleaned the fuel tank, but I wonder if that's true, any suggestions would be greatly appreciated, Thanks.