Yes, this happened. It actually happens all the time. 5 of the exact same mail piece sent to me on the same day. Lists need to be suppressed/de-duped by address. This is a super-simple fix. I bet you think all marketing companies know this and automatically do it, right? Wrong. The cost for your mail company to do this? Zero. The cost to you when it’s not properly done? Expensive. Dear Brighthouse, time to use a professional.