Have you noticed the product guarantee on the back of products? Almost every product you buy has some kind of guarantee with it. They might replace the product, a part, offer service, etc, but it is up to you to ask for it.
Recently my friend Maria had a hose nozzle break. It was a generic one she had purchased from Ace Hardware. When she went to buy another one, they informed her of the product guarantee. As long as she keeps the original packaging and receipt, they will replace the product if it breaks! (A lot of stores offer this, you just need to ask about it.)
We recently bought my husband a pair of dress shoes with gel insoles. The gel broke and I contacted the company. They sent us a new pair of insoles! That really made me think a lot of their company for taking the time to do that.
Have you ever had a product replaced because of a 100% satisfaction guarantee?