A computer system and method for enabling or disabling a payment vehicle at the request of a payment card holder from a remote device. The computer system comprises a computer having memory and a processor for processing input data received from a remote device. The input data comprises an instruction executable by the processor in a form of a text message or electronic mail received from the remote device, with the instruction to enable or disable a payment card of a payment card holder by changing the status of the payment card. An interactive remote interface computer software application is provided to the payment card holder for use on the remote or other device.