Shocking Sealy service

I bought a top range queen extra length bed set in July 2020. The base has a tear in the top fabric abs the dust cover is tearing. I reported it and customer service rejected the complaint saying they only cover stitching for 3 months!!!! The bed has a 15 year warranty!!! The base does not have a stitching issue the material is torn from turning the mattress which they say must be done monthly!!! Definitely do not recommend Seally and their customer service department are ***********. They have a picture which clearly shows the material is torn!