Just a thought.
if you had a 'contract' with Currys/Dixon or some other company that went to a 'national', then do what I do and never buy again from them.
Go somewhere else for your TV, electric shaver, washing machine, fridge, hover etc etc
I've never stepped inside the previously mentioned companies, and in my opinion they have lost more in profit than they would have pad me to clean their windows.
That way your hitting back, in a small way, at the very people that took the job away from you! Small victories.
Thoughts?