3D Secure Security Issue on Virgin Money Credit Card

I'm trying to sort out the 3D Secure security setup on my Virgin Money card as I'm unable to currently make online payments, which is proving to be a bigger and bigger hassle. I have called ABSA's 3D Secure call centre on a few occasions and every time I'm told that the password/PIN has been reset and that an SMS will be sent to me to confirm the PIN. The SMS is never received and the situation remains unchanged - every transaction is declined because my card cannot be authenticated when I'm making online payments.

This has been an infuriating experience with a product that I've otherwise had no problems with. What do I have to do to solve the issue?