Online purchase 25 days and still waiting on delivery

I bought a bed online and 25 days later still have no delivery. No communication , they try to “upgrade” my purchase to a lower spec bed as apparently didn’t have stock of the one I purchased Then told me they waiting for the manufacturer to reopen and deliver my chosen model Mattress warehouse staff has no idea about the beds they selling offering me firm model instead of the plush one I paid for and telling me it gets plush as u sleep on it 😂. Zero communication I call and email a few times a week with no reply So very disappointed and frustrated