Like with all companies the responses are mixed I have had them replace products and felt the service was acceptable based on the product was under a year old. How long have you had your G400? Have you tried it in another device? they will get you to go over all the normal troubleshooting so best do as much as you can before you get on the phone.
yup Poor stock control and a complete mis understanding of their channel pricing structure meant the replaced just about anything. I remember they used to replace without even testing teh products So people were using other peoples Serial codes and getting replacements
There is somewhere a story about a guy who set up an Ebay shop selling Logitech RMA's using just the serial codes.
So most of their "stirling customer service" reputation comes from a terrible practice of replacing everything in advance. On top of that it makes you wonder when such practice was rife just how much margin they make in some of the more expensive products as they are still in business despite giving out thousands of pounds of products in fraudulent RMA's.
In my case they asked me where I bought it from, the answer was OcUK. But I didn't actually provide them any sort of receipt or proof of purchase, they also asked me for the date when I bought it which was something like 3/11/2012. They didn't ask me to send the mouse back and today at 8 am I received an email with a confirmation of new mouse being sent out, still waiting for tracking code.
So what you are all saying seems legit. But wouldn't they stop this? I mean its a business and they lose a lot of money on RMA staff...