Hi Susan,
Cook's Essentials have a lifetime guarantee, however I'm not sure if this is just for the non-stick so you may have to query that with Customer Services.
I had a lovely set of copper bottomed stainless steel pans, but the non-stick went on the frying pan so I called CS. Luckily I had the item number as we used the box for Christmas decorations. (It must be on file with them anyway.)
Anyway, they told me that I'd have to return the entire set, not just the affected pan, which I was slightly gutted about, but I decided to go along with that and the set was collected by courier because of the weight.
I ended up treating myself to some stainless steel Le Creuset pans off of Amazon as they didn't have any pans like my old ones at the time. Figured I could help pay for them with the refund.
HTH