Non-Stick Green Pan - going Sticky

This company's Customer Service is not bad its non existent. I purchased a "Green Pan" - so called non stick with a 5 year warranty on the ceramic non-stick coating. After just short of 5 months the non-stick was becoming sticky! This pan bought at a premium price has been looked after like a child, never overheated, always cleaned with a soft kitchen swab and securely stored with a lid in a cupboard. I went onto the greenpan.com website given on the purchasing documentation. The "contact page" opens but the "contact us" button does not work. I rang the *** number repeatedly at various times of the day, after a couple of rings it goes straight into "piped plink plonk music" and never answered. After a bit of detective work on the internet I found the *** email address and sent off a complaint to them with a request for them to inform me how to go about getting a refund/replacement. Obviously their "Server" is living because I received an automatic response informing me that they had received my message and a consultant would ring me within 24 hours. After 5 working days I still have not had a call. Service beyond bad