Defy Appliances does not respond to emails as all/poor Customer Service

We have 3 Defy products which we previously created a profile on their site, and registered all 3 products under their warranty section. On the 4th September I found my Defy profile was no longer there - re: I couldn't login to the site as my profile was seemingly deleted. I immediately emailed Defy and provided them with proof of all 3 product registrations, and requested someone contact me as to how we can get these issues resolved, as I am concerned should something happen to the items, Defy may not want to honour the warranties, due to them not being registered on the Defy Site. I received no response from them at all. I have since sent further follow up emails on a regular basis over the last 2 weeks, without any response forthcoming from them. I am basically now resorting to this Hello Peter channel out of frustration relating to 2 weeks of unanswered emails.