Where's the warranty??

RC Willey advertises a 20-year warranty. However, the written warrantee does not seem to exist. RC Willey sold me a mattress for over $2,000, but they cannot provide me with a written warranty. The mattress was delivered with the manufacturer warranty attached, but the 20-year was advertised by RC Willey above the mattress in the floorroom. Customer Services insists it's guaranteed for 20 (pro-rated after 10 years), but they refuse to provide anything in writing. They also advertised they would remove the old mattress. The delivery people refused to take our old mattress.