Ok, now I understand. I didn't realize it was a flat fee per day. In that case, you are accomplishing what I was getting at anyway, you are asking for replacement fluid for the defective bags and that is costing them $$$. That alone should get their attention and, hopefully, some action from their end.
Good luck!
My private insurance carrier send me a copy of the first month's PD billing from the Big F. Asking price was over $1300/day (I call this the "Visiting Arab" price); the "insurance company paid in full" price was about $135/day.