I'm sorry you're frustrated, I don't see why.
Municipal water is often sanitized with monochloramine which reads as CC. This may be the cause of your CC but if it persists, we'll talk about shocking the pool.
I'm concerned that you lost 1.5ppm FC overnight. If you can, test at lunchtime today to be sure you're not getting to the minimum. Dose 4oz dichlor if you are below 3ppm.