Alok Industries — Hotel Style 600 thread count King sheet set

05/11/21...we purchased ($69.37). We were expecting soft cotton sheets and paid more trusting that this would be the case. My wife washed the set and we put them on. They fit well but were rough and not soft as we would expect from sheets that cost more than what we had before. We are approaching 80yrs. and can't sleep well on this bedding. My question is, what can we do with them?
Can we return them, exchange for a softer cotton or what? Can you help?

thank you,
Nathan and Ann Fama