Like many of you here, I too spent a career with Bell going back to the mid 70's. Just prior to divestiture there was an internal study done that revealed that as much as 90% of ALL WATS bills EVER rendered contained one or more errors!!! At the time of this study I was working for the divestiture team in Basking Ridge working for none other than Arch Mcgill himself!

In 1983 I went to work for an interconnect that, as part of their maintenance agreement/warranty program, did bill studies for their clients. We found HUNDREDS of those old line protection devices still on bills even though they had supposedly been removed several years earlier!