We did copy the finance company (Creation) into an initial email we sent to CSL, but have not had a response so far. The main contention seems to be that 6 months have passed since we took delivery of the suite and we've just only just realised it is not the right one. Should that make a difference?

No, if we keep the wrong suite, they'll just adjust the finance. The usage fee is apparently because they won't be able to resell the suite as new and it's to compensate them for that. CSL (sofaworks) apparently have 9 new stores opening this year so I've suggested they can use the suite in a showroom.

I didn't explain that very well, they'll only pay us £795 if we agree to keep the suite they wrongly delivered. Even then it's not that straight forward because all they'll do is adjust the finance to reflect the lower price. Also to clarify CSL have admitted they delivered the wrong suite.

We bought a 3 piece suite from CSL last year, ordered in May, delivered in August. Through a fluke we recently discovered we haven't actually got the suite we had ordered. What was delivered is a similar suite, same colour, roughly the same size, but different name, and £795 cheaper than what we ordered. We are still paying for the suite we initially ordered. CSL (now Sofaworks) have offered to pay us the £795 difference or we can re-order the suite we asked for in the first place. We have been back to the show room to check out the suite we originally ordered and have decided we still want what we ordered as it's nicer. CSL are saying that because we have had our suite now for 6 months we must pay them £500 as a usage fee. We don't have small children, we don't have pets, we don't smoke and we don't sit on the suite eating our dinner. Effectively the suite is still in 'as new' condition. I feel aggrieved that I should have to pay CSL a £500 usage fee, for a delivery error which was fundamentally their fault, but which we have only just discovered. If anything we feel we should be compensated as for the last 6 months we've been paying for a suite we didn't order. Can anyone advise me where I stand here? Am I obliged to pay CSL for their error? Any help or advice is greatly appreciated. Kind regards, Andy