over charged for robin william tickets

was charged 175.00 for 4 tickets for robin williams,100.00 service fee and 20.00 for mailing them, (total of 820.00) the tickets arrived with 75.00 face value, (total 300.00) i was aware the tickets would be more than face value, but 100.00 more per ticket? what a rip off, i have made to phone calls and left messages but no one will return my calls, i suggest whenever possible to buy at the event right before it starts, then u have no service fee and don't have to over pay, i will never buy form ticket triangle again