"I recently bought a new leather sofa, and was told when I bought it that the cushions would bounce back after they were sat on. I've only had it a few weeks and the cushions are left wrinkled every time someone sits on them. I've been told that I need to smooth out the wrinkles every morning. I really don't want to have to keep doing this and I'm starting to regret buying leather."
Don't regret buying leather, if well maintained it can last a life time. But in your situation I can see why you're getting frustrated, I wouldn't want to be smoothing out the wrinkles everyday either! There are a lot of reasons why the wrinkles may be happening. First of all leather will have a tendency to stretch a little, it is a skin after all, but the softer the leather the more it will stretch. If you combine a soft leather with a foam that is too soft then you will find that the leather will wrinkle more. A soft leather feels fantastic to sit on, but there is a trade off. It is likely then that in your situation that you have a leather/foam issue.
Foam is rated in two ways Density and Foam Hardness (compression). The density rating will let you know how long it is expected to last, and the hardness (compression) indicates if it is soft, medium or firm in feel. So if your sofa has a low density and is soft in touch, although it may be comfortable when sitting on it in the showroom, it may not withstand the rigours of daily life.
You could go back to the company and ask what the density and the compression (hardness) of the foam is. If it is on the softer side, ask if they would replace the foam with a higher density foam with a medium to firm hardness.
So in future if you are investigating buying furniture make sure you understand the importance of foam. Most people just think about the the upholstery fabric, but don't realise, that just like a house, it's the foundation that has the biggest impact.
If you have any questions or would like some advice or help, feel free to call 0800 698 746