To be honest, I'm suprised you've received any funding. You're a company that increases Twitter and Instagram followers. This is a deeply dodgy, largely unproven and mostly saturated market and you're charging prices that'll leave you out of pocket. No way are you worth $600,000. There's no way you can get enough customers.
You can spin this as a story about how you should never leave the comfortable bubble of San Francisco, but to my mind it's yet another story of how insane things are over there.