Absolutely love CapitalOne's online portal and customer service. I've never had to call them for anything; all kinds of services are available online. And they are super prompt. Their fraud protection is also awesome. And they give a straight 1% cashback while doing all this. They were also the only ones to give me a credit card in the US without a credit history... online.

Wish I could continue to use them. But I ran out of USD long back and must use Indian cards now.