Ann, whilst I understand it's annoying that a shop stops making an item you really like they can't just keep making stuff that doesn't sell just because one person wants it. So you would have spent £70 on two pairs if they were there but how often would you buy two pairs of jeans? Just because they fit you well it doesn't mean there are hoards of other ladies with the same requirements. This particular size was obviously not much of a seller. Shops don't tend to stop producing items that are making them money. Didn't you have a gripe with their selection of skirts a while back too? If they tried to cater for every customers individual needs they'd have gone bust donkeys years ago. Saying it made you suicidal is a little OTT.
I'm a different size to you but off the top of my head can think of a handful of highstreet places that would likely have your size. Try Next, Evans, Dorothy Perkins, BHS, House of Fraser.