Can't get hold of DEFY for a faulty product

I have had problems with my DEFY fridge since the day I bought it. The water dispenser didn't work from day 1, and it took me numerous tries and about 4 months to get hold of defy for them to repair it. They came to repair it, it worked for a day and then stopped again. It then took me another 2 months to get them back out to fix it again, which again lasted about a week of working, and is once again broken. The seals on the fridge and freezer are terrible which makes water pool at the bottom of the fridge, and the freezer defrosts and freezes the draws closed because of it. Ive been trying to contact them about this for a month now. They dont answer the service centre number and they dont respond to service requests on their website, and there is no direct service email. What should I do DEFY? i cant have a freezer that defrosts every day and refreezes, but I cant get you to come fix it? I thought I was buying a good quality brand when I got it, but after the year and a half of trying to get hold of them to fix problem after problem, i guess not.