You must have at least a flicker of hope that they will respond or you wouldn't have posted your plea for an explanation. Posting that particular demand/request anywhere but the "Guitar Tricks Site" Forum is a waste of time.

Understand that GT leases copyrighted songs in bundles rather than negotiating for each song separately.  When a lease on one of these song bundles expires it can't always be renewed. Consequently, whole bundles of songs sometimes get dropped simultaneously. This isn't just a guess on my part. This info is straight from the horse's mouth.

Sascha