I have really bad experience with Flightsticketgo. They offered cheap airfare to trap the customers and once you complete the payment they send you second invoice to complete the payment steps, so the total cost of the ticket exceeds at least 50% of the original cost. They are charging 150$ to 250$ for refund of each ticket and that usually exceeds with original payment.
Please keep away from this company. They are are fraud and scammer.