Eventticketscenter.com / Very unprofessional service!

I ordered tickets for myself and some friends of mine to a show. First, they charged $300 from my card, but didn't book anything. Few days later I decided to contact them because no tickets were received. Their rep apologized and said that seats were already bought and their system didn't update it, so they had to cancel my order. Then they said there was nothing they could do. Called them many times and wanted to talk to a manager, but every time I called manager was very busy to talk! After asking to speak to someone higher than the call center rep, I was told no. I will never order from EventTicketsCenter again!