If No PayPal or CreditCard, What other alternatives solution for making international payments ?

I know this must have been asked several times already but what is the definitive solution without having any issues ?

My cc already got deactivated twice because some international sellers have not implemented 3d secure verification. Same problem with PayPal. Even if the transaction goes through the cc issuer calls to get confirmation and if I am not reachable on the phone they deactivate my card.

The cc company also blocked a verification amount charged by Entropay and warned me not to…

If No PayPal or CreditCard, What other alternatives solution for making international payments ?