I returned a pair of faulty walking boots and was sent an alternative when they agreed it was a manufacturing issue. The size was wrong. I returned them and asked for a full refund since they offered nothing else I wanted. They refused, telling me it was more than 6 months since the original boots were bought. I'd only worn them a few times. They are hiding behind misinformation and a company policy that operates just inside consumer law and treats customers with genuine issues with contempt.
To be balanced, I have to add that they gave me credit on my account for the original boots, so not quite as bad as it could be. Make up your mind about whether you want to deal with this company. I would NOT!