Trying to book a Marriott Protea. Went through the normal booking procedure on the Marriott website, entered card details and booking seemed to complete successfully.

At the time of booking I thought it was odd that my credit card did not get charged for the advanced purchase booking.

Later I got an email from Protea requesting deposit payment within 1 day.

I clicked the link in the email which took me to TravelBuy Payment Gateway however when I try to pay I get a "Sorry, your payment could not be processed (Error 2003)." error.

Anyone with similar experience or advice on how to proceed?