We do have a VA service but with different crowd (these people are good at sales leads). The problem you didn't get good results was because general VAs aren't really an expert at sales leads and outreach. And that's the reason we have raised the prices because general VA prices won't work for sales and lead experts.
The LeadGeniuses are both US and non-US based. A general rule of thumb is that people who do outreach and interact with the client will have 1st language or bi-lingual proficiency in English, so a bunch of US based workers.
Why don't you send me an email at prayag [at] mobileworks [dot] com and I will be happy to explain more.