I am sorry for the trouble you are having. Our phone number is listed at the bottom of every single page on our website... http://www.coralvue.com
The phone number is 985-781-9078. We are not trying to hide it or make it hard for people to find it. We placed the number where most people will look for it. In order to process any type of warranty, we do need a serial number and proof of purchase. I do not think that is unreasonable and it is something that most companies will ask you for regardless of the industry. If you take your car to the dealer, the first thing they will do is read the odometer and confirm the VIN number. It is to make sure that the product was in fact under warranty. It DOES NOT mean that they wont cover the warranty... they are simply making sure that the product is under warranty.
While Maxspect tries it's best to ensure that every product coming out of the factory is free defect, it cannot be done. Any company that tells you that their quality control department is perfect is lying to you. Even EcoTech Marine has it's share of issues with their products (do a search online). We provide our customers with an easy to find phone number at the bottom of every page on our site. If you call and you cannot get a hold of us, we also refer you to our support portal and provide you with an email address to email support directly (support@coralvue.com). Heck, good luck trying to call or email amazon directly.
I was already able to diagnose the issue here and I suggested that you start a private ticket so we can get proof of purchase, serial number and your shipping address. Once we have that information we will send out a replacement controller which should fix the problem. So am not sure why the disappointment. You have an issue, you came and let us know about it, we diagnosed the problem and will be sending you replacement parts as soon as you provide us with some basic information.