Home of Living Brands/Russell Hobbs really disgusting service on their faulty products

I purchased a Russel Hobbs Electric Blanket last year which was faulty they gave me the run around and I stuck to my guns to get a replacement with an extended warranty. Within the Warranty period the unit has packed up again they are now only willing to do repair which can take up to 21 days. I sent my email off on the 11th July when they came back with the same run around i experienced last time. On the 14th July I sent a request for a manager to phone me with no response. After following up again today I received an email today to sign a form which states it may take up to 21 days to repair , all I want is for them is to bring me a replacement unit and they can have the old one.