I have film on my shower glass. This is not soap scum! I have used several cleaners and nothing works! Help!!?

My shower is glass with some frosted design on them. I clean them regularly but noticed that after I installed the Automatic Shower Cleaner from scrubbing bubbles this film or stain has appeared. I have since been in contact with the makers of the shower cleaner and they apoligized and refunded my cost but that is not helping the problem. I have tried several things to get the glass to come clean and nothing seems to help. Can someone give me some suggestion?