If you want the info to actually get to the powers that be at the actual company as TF. Speak to the Regional Rep of the product for the store you shop at, such as NM, Nordy's, whatever. As for a time limit for return. Again, this should not be an issue as to how long it has been. Unless it has been like 5 years. And you have a nub left. The other day Mama shared with the National rep of Armani pertaining to a product she was quite unhappy with. Nope never asked for money back. She bought it like 5-6 months ago. Was just sharing with the rep her issues with the product. The rep took it upon herself and got Mama a full return for it. Of course she didn't have the product with her. Since she wasn't returning it, didn't expect to see this lady. Arrangements have been made the next time she is in the store, they will handle the return. Doesn't have the receipt either. But the rep did ask "tell me the product is still close to being full?" Yes, it is.
A good company wants to know when there is a problem. Sadly they will listen to their employee's on the higher up food chain faster than just us. Unless you are like my Mama and she just kicks butt.