['I was overcharged on my water bill by 200%, during a time I was on an especially tight budget.', 'Oh god..They do that to me TOO! And we have poison water! Are they going to fix it?', 'Yeah, they admitted it was a problem on their end and reversed the charge.  I had to waste literally hours on the phone with them!']
Oh..the phone part is the worst! And being transferred and re-telling the story! I am glad they reversed it though! Most companies won't!
I was overcharged on my water bill by 200%, and I was on a really tight budget.  It turned out there was some problem in billing on their end.