Claims and Complaints OEM uses a web-based complaints handling procedure which is aimed to simplify for our customers. The process is a proven web-based tool that among other things, makes it possible to follow and see the status of your case. It's also our hope that with this new system the quality of our complaints handling will be appreciated as improved.The complaints routine is mainly a web-based tool, but our work also includes listening to and providing feedback to you, our customers, and in a timely manner. Should you need to, you can contact us via the following email links: Complaints handling - Door products Complaints handling - Window/Glazed door products How do I raise a complaint? We have created an interactive training course to guide you through the process of raising a complaint online. If you want to get started and need some help to get your login information, or if you have any other issues around the claim system, you are welcome to contact our customer service.