Worst experience ever! Customer service is based o...

Worst experience ever! Customer service is based overseas and there is zero accountability. My credit card was charged by Flight Network for a flight to Rio with travel insurance. I received an email from Flight Network stating that my credit card had been declined but moments later I received a receipt for my purchase of travel insurance. I checked with my bank and they informed me that the full amount for the flight and insurance has been taken out of my account by Flight Network! My bank tried to call Flight Network to sort this out however FN said they could only have a supervisor phone me. No one phoned, I haven't spoken to a supervisor, even after calling multiple times. They took my money and I'm left with no flight, no money, and cancellation insurance for a flight I do not have.