I'm sorry you're going through that. It's hard enough dealing with the system without cast members making it more difficult.
You might be right, and it's my suspicion too that now days it's near impossible to split off a walking reservation and keep walking, however back in 2020 I did just this. Like many I had my points returned to my account and had too many to work with for my needs, I secured a Club Level reservation (that was later canceled) but in doing so I kept on walking the room to my birthday (which I kept). It was interesting seeing two bookings on my account both for CL. (Honestly, I wanted BRV but it was unavailable.)
Can we add DVC phone cast members to the list of Bus drivers and Boat skippers to those who design and perpetuate rumors?