Hi there,
This post caught my eye and thought I would answer. A number of years ago I knew a wonderfully kind lady. She was a good mother (I had her daughter in a couple of my music classes) and she had a very nice husband. The neighboring small towns knew of this lady's habits and would simply call the husband who would then either return the item(s) or pay for them. This went on for several years. She got to the point where she had a nervous breakdown and had to be committed for a few weeks. Had she had proper psychiatric help, as she realized later, this would not have happened. She recuperated, was put on meds, and thanks to a lot of friends, is still to this day -- doing just fine!! Please don't tell yourself "I can't"...tell yourself "I will get the right help and I WILL be OK!" :)
I would NEVER EVER judge you!! We know this is a real problem and that you WOULD 'stop it' if you could on your own. You can...but you do need really GOOD help from a trained professional... not just a good listener or a priest/minister. Loving wishes to you.