This is actually a fairly common problem in much of the (misnamed) third world. I've even read stories about southern african companies unable to lay line faster than it was being pulled down by "bandits."
That's why cell service is more reliable there than landlines. GSM antennas powered by localized generators. No copper to steal.
Ah, but those batteries! When Charlie went through down here a couple of years ago and knocked the power out (8 days at my house) we were without cell phones - seems the phone companies had not been checking their backup batteries on there towers and good majority of them were simply dead! So with the copper not available - what's a generator and battery worth?
Not in my neck of the woods it's not. I can barely even get a signal. I've been looking at some of the antenna units that are offered for picking up a signal from a local cell tower and broadcast the amplified signal to an area around the house. Anybody here ever see these in action?

Bruce in Cumberland County Illinois

Oops! My bad. Looked up what a GSM antenna was. Are the worth the investment?
More reliable THERE, as in Africa.