Frustrated MVG card holder

Everytime my husband receives an email from Sibaya, indicating Free Play amounts that are available, we drive 50km to the casino. Without fail, he has a problem loading the amount onto his card. On every occassion, he has to call for a supervisor. He has been told to come another day as there is a problem with the 'system'. This is ridiculous. We have left Sibaya devastated on more than one occassion. This morning we were at Sibaya. Once again we had the same problem. Once again my husband was told to come back another day because of technical problems. Dot the supervisor was unable to help. This trip is not only becoming frustrating, but expensive as well. This is definitely not on. Somebody needs to get their act together.