Just to keep you up to date, have just recieved e mail from mcafee US customer services, full refund on way.
Just a little advice for anyone with similar problems, this is the second time i have had a problem like this, find out your legal rights from consumer direct and if you just get messed around by a Uk companies internet office, go to their International HQ web site and e mail everybody who has an e mail address. Worked both times.