Preferred Card Ts & Cs

I've had a well documented very unhappy year with Avis. This despite I remained loyal and yes the fact that as a Momentum Multiply client I receive a discounted rate was def applicable. However I have a number of times been in a position to obtain cheaper rentals through inter alia Travelstart. Now for the irony. Avis regards Multiply purchases as \Contracted rates"";Avis misrepresented to me for me to use them as a preferred service provider (esp by inviting me to take up the Preferred /card) knowing that they will not allocate any benefit to me and is thus guilty of *****. """