justairticket canceled the ticket and ask for more money New Jersey

First, I want to warn you that these guys are real thieves. I bought a ticket, the price was deducted from my account, the sent me the ticket and after two days the called me and told me that the ticket was canceled and if I want that ticket I have to pay 300$ more. I asked why and they told me that my bank was closed and the could not check with them about my account. I called the bank customer service and the said this the funniest thing that an agency could say. Another time I bought a ticket with Amex and they told me my credit card is from the UK. They are really stupid and at last, because I had no other choice I paid $150 more and they sent me the ticket. Don’t work with them. Buy a ticket from original airlines. It may cost little more but you won’t have to deal with these hustlers. 
Additionally, they are all foreigners and hardly could speak English. (or they show this way) so they pretend that they don’t understand what you are saying.