You can have the best juice in all the world, but if I can't order it when my schedule allows ME to order it, it's not great customer service. In fact, it's not service at all. And honestly, people shouldn't have to put up with that kind of service. Why they do is mind boggling. Would you put up with that kind of behavior from a store you shop regularly at? Of course not. Why should online vendors be allowed to get away with it?
This goes back to the small business thing. Juggs is a VERY small operation, not Walmart. The way I see it, they're between a rock and a hard place. Either they need more headcount (Hire people) or close down for vacations / family emergencies etc. If they hire more people, those people need to be paid, and the cost of their product will need to increase. Thankfully for them, they have a loyal customer base who is willing to wait while they take care of life outside of work. This is really a tribute to their product and service while they are available.
What might make sense for them are franchise opportunities, or partnerships with companies like CEV, HV, Canvape etc where they can mass produce their product and have a small reseller network take on their line for a small profit margin. These 2nd sources may not be as inexpensive as Juggs direct, but could service their customer base while they take some time off.