I have only one real credit card. Use it a couple times a year and pay off immediately, just to keep it active. I use my bank ATM card with Mastercard or Visa logo, can run as credit or debit. But it's money from my own bank account, not real credit.
Interest will swallow up your life, and can trap you into a bottomless hole that will suck the life-blood from you!
If you are dissatisfied with this card (I don't care what brand it is), NOW is the perfect time to get away from using credit cards completely. Pay it off, no matter what it takes, and kiss it good-bye. Your life will be much more happy.