I'M DESPERATE!! Where can I buy tomato vines right now?

I'M DESPERATE!! Where can I buy tomato vines right now?? Specifically I think they're heirloom tomatoes... I accidentally ruined 12 tomatoes vines in my parents garden that had been grwoing for weeks and I want to replace them immediately, but I've never bought tomato vines before. Tried Home Depot and OSH online just to see if they actually have carry them at their stores, before calling local store to check... Any other help?? Please I'M DESPERATE!!