Greatest sympathy to Janet. I have a bad back and wide feet. The only shoes I can wear are wide fitting and low heeled, which most shoe shops interpret as granny shoes and which I won't wear because i don't have the matching crimplene pleated skirt with elasticated waist. So I end up in flip flops, or posher flipflops made by eg doc martens, or bear foot, or boots in winter. Sometimes I can get a decent shoe but it will take months to break in by which time it looks kernackerd, but might be wearable.
I asked in Clarks in Warrington if they would measure my feet and was told 'we don't measure adults modom', so modom won't buy from them any more.