Being harassed daily!!!! Totallly unacceptable!!

On a daily basis Iam being harassed by MBD on behalf of Altec Autopage for an account that I or my late husband apparently had with them 16 years ago!!! I have no knowledge of this and have told them this! I have told these people, who have no manners or people skills to stop calling me! They have the cheak to tell me that I am delaying the matter and that I must pay up! 16 years it has taken them to contact me and I'm delaying the matter!!!!! I am called and smsed daily !!! I have been with another cellphone company for over 10 years now and now I have to deal with these rude people who have no clue as to how to deal with people!! Get your act together both Altec Autopage and MBD!!