Yes it looks like they don’t want anyone to be on Diamond status. You loose points if you have been with them for less than 3 years. After 1 year you only get 25 out of 200 and also loos points if you drive more than 500 km a month both impossible targets not even considering drive points
I also had the same problem. It looks like calculations are based on available funds that is excess you paid in to the bond. If you haven’t paid anything over your normal installment then you have 100% usage.