I am traveling abroad for an extended period, using a local SIM card in my mobile phone...

I am traveling abroad for an extended period, using a local SIM card in my mobile phone and without access to my US number (I have suspended service while traveling). I have now had several instances where I was unable to purchase an airline ticket online (both companies based in India) because a verification process required me to receive a text message to my US number. **I’ve spent hours on the phone with Capital One trying to resolve this—the best they could offer was a three-way call with the merchant (no luck because the number listed did not go through). **I don’t understand why (a) Capital One does not offer another method for verification besides cell phone, and*or (b) why I can’t enter a non-US number on my account while I am traveling outside the country. **I am shocked that the customer service has been unable to address this question—I’m quite sure there are other Americans in a similar situation. This is potentially seriously disruptive because I will need to purchase additional plane tickets and other transportation online while I am in India for a month. Right now I have a friend who has bought the tickets for me, but this is not a long-term solution. **In a globally connected world, credit card companies need to support travelers abroad.