CITIZENS for a BETTER SUSSEX-CBS

I am wondering if anyone else has experienced issues lately regarding the delivery of mail. I have received 5 phone calls from various accounts that tell me that my mail has been returned to them, address unknown. Also, I had one neighbor deliver a pile of mail to me that was sent to his address. I also have found mail in the street lately and received the mail of other residents in this development. Has anyone else been experiencing these problems? By the way, my accounts did have correct addresses on file.