Comrades Marathon Association ****s me second year in a row

Comrades Marathon makes me forfeit my 50% race payment and disqualifies me from running in the forthcoming race through a fault of their own. They registered me for some relief fund they are running, accepted my application to run, took my half payment. Upon challenging them that I never registered for a discount (relief Fund) they said ok I can pay the remainder but not on the race day. Suddenly, now I receive notice from them that I cannot run and I forfeit my initially paid money.