Im a platinum member. My firm has 20 rooms booked...

Im a platinum member. My firm has 20 rooms booked at this hotel for a pre-negotiated rate of 255. We've had these rooms for over 4 weeks. I was looking to have this rate honored for a room that I was to book for an additional 4 weeks. They would not honor the rate. SPG is over rated, over priced, being a member provides little to no reward.