I think Saracens point was quite clear, the DSR are appropriate as the wrong goods were supplied, and even if the DSR didn't apply (my words, for example, if they had been supplied to a business user) then the goods could still be returned as thye supplier wasa in breach of contract.
However, the OP's query has been answered some time ago, and the thread has gone off the original topic anyway - so it is being closed.