All their work are external(acquiring links). I didn't get any kind of updates from the provider for the past 5 months. We own a portfolio of successful sites and know the basics of on-page techniques. Since the network was mentioned here on HN in one of the Show HN posts, I some how fall for that, hoping in any case of dispute the network should resolve the issue by taking a fair position. We never paid for a SEO service before and this one was to pretty much to test if it is really possible.
We spent around $5k on popular freelance networks each month for various tasks(not SEO). In many instances the networks takes a fair position in disputes. But I was dealing with the founder of this network and he wasn't reasonable. It is a great lesson for me, since it is a startup doesn't mean they would treat their clients with great respect.
As an Entrepreneur the lesson is, sometimes we may loose a valuable client by our not so good attitude and judgement.