They actually wrote me back:
Thank you for visiting http://www.kraft.com/.
The formulation of General Foods International From The Makers of Maxwell House has indeed changed and I'm sorry you were disappointed with your most recent purchase. Your experience is important to us.
I would like to send you a reimbursement coupon for the product but unfortunately, I don’t have your address. If you would like to have the product replaced please reply with your full mailing address.
Our staff works very hard to provide the best tasting and satisfying products to the preferences of most consumers. Your opinion about the product is important to us as well and I will share your comments with our product development staff. Thank you again for taking the time to share your thoughts.