Credit One Bank charging interest but suspended the use of card. Los Vegas Nevada

            I have a Credit One Bank credit card the has a low limit. I only use it to get minor things and to keep a nice rotation of credit. I haven't used the card for a couple months so I tried to use it a gas station to get a few dollar of gas and the card declined.  I called the customer service number (which is outsourced) and they told me everything was fine. A month later (that happens to be today) I trying to purchase fuel and the same thing happens. I call customer service from thee station and we did everything of which I had no luck and then requested a supervisor, and was put on hold for a half hour. The same Rep tells me the reason my card was suspended because of a fraudulent charge in Virginia.  

        I then asked him how could that be when you've been telling me everything is find for the past hour. I went home to call by land line and the Rep I spoke with could answer my questions and abruptly hung up on me. I called back and was told I had to try pot luck with the card to see who would approve charges, of which made no sense. I ask was this service outsourced and she said yes. I knew then and there this company is starting to conduct themselves in a fraudulent way. I am asking if anyone going through the same issues. Their Web sight is suspect and started to notices and limit access to information on the website and app that I use. These charge have been happening the past 6 months. I would like to join or start a class action lawsuit against Credit One Bank.