I'm not 100% clear what you're asking, but it sounds like you are a passenger who normally uses a safety harness, the base was removed from the bus for some time, and now it's back but you are not being put into the harness? We don't know anything about your particular situation, but it sounds like a question for your driver or aide. We don't know who they are, so without specific information I don't think anyone here can help.
I'm sorry if you're having problems communicating with your driver and aide about this, and I understand how the loss of the harness could be uncomfortable for you. If I knew how to contact them, I'd find a way to pass your request along to them.