Big Feet No Trainers

I have been trying to buy trainers for the last 3 weeks, I have size 11 feet that are very broad, my last pair of comfortable trainers are falling apart, plus I have 2 other pairs that are fashionable but make my feet ache if I wear them

Why do people like me have such problems trying to find shoes & trainers to fit, when I go in shops I try to make the choice as wide as possible, with no specific brand or type, to increase my chances of finding a new pair, because I have known this problem in relation to shoes all through my 59 years. What do young people with big feet do? are there shops that deal with people like me?

Also why are they so suprised when as I did in desperation find a pair that seemed okay, but later caused my feet to ache? so then back to the store for a another type or refund only to find they have nothing else that fits and "sorry we dont do refunds only credit notes" so I now have a credit note in a shop that sells nothing I want.

Are there shoe shops out there that have staff who are knowledgeable about their product and also cater for us "Odd sizes" because I feel that most of us bigger people just resign ourselves to struggle.

What about a pressure group to change the world for us bigger sizes , maybe we should picket the big manufacturers even create Blogs to raise the issue.