I'm talking from my own experience in hiring VA's for eBay, product listing, sourcing, order fulfilling and etc.
THIS IS HARD, BUT HERE'S WHAT YOU NEED TO KNOW ABOUT VA:
1. They are probably from India, Pakistan, Vietnam, Philippines.
They are very clever people, believe me, if they decided to work as VA, they are clever.
It's difficult to find a good one because we are lack of time, to train and show them.( they do understand everything, but they need more time to make the same as we do. they do afraid to make decisions and all we need is PATIENT.
I am not saying, that all of the VA's can fit Your job, but most of them can. which comes to the second part :
2. Your VA is not happy, and making bad decisions, because they don't see the future, or where everything is going on.
Your VA is like any other employee, who needs inspiration, motivation, and a decent amount of $.
If you are not going to show them, "how easy and fast is your work" they will keep saying, that others are paying way more.
Short story:
I pay my VA $0.15 each Listing on eBay
Competitors ( majority ) Pays $0.5 per listing on eBay
I pay way less, just because I personally trained them, with my own technique how to list to eBay ( manually) and prove to them, that they will make much more listings doing this way in a shorter period of time. Then, my VA was happy. He got paid way less, but with the same amount of time - she earned 5times more, than working for $0.5 per listing.
What I am trying to say is that You need to focus on your employees, they are human beings, just like You or me.
3. Do a full-time job, teaching 1 VA you believe the most. Do the best, make it know everything You know, and show her what will she earns if she does it right. then, after some time, ask her to go to her village, city, friends, family and teach them to do the same.
the amazing fact is, we can teach VA a hard way, but if Your VA will teach the same you thought her to her relatives, friends - they know what to do right immediately. this is Golden all You need is 1 Good VA and ask her to recruit and teach other her country people ( ofc you have to pay him/her for doing it)