I have been having issues with my wifi at home for about 2-3 months now and there doesn't seem to be any solution through the contact centre. I can use wifi in my office which is where my modem is located, but I can't use it anywhere else in the house. This just happened in November last year, previous to this I have never had a problem with the wifi range. I've had a new modem sent out, I've tried changing channels and still nothing. Any help would be appreciated.