Looking To hire a VA to Make Sales Call

I'm looking to hire a VA that will make sales call and as well as setting appointments for my sales meetings. The VA must be fluent in English and very experienced. The script will be provided and as well as proper training. I will start the VA with $300 just to see how they will progress. if the VA is really good and they get me appointments I will increase the pay to $500 and as well giving out bonuses