Harassment

I am constantly being harassed by this company after telling them that I have a company phone and that I am the new user of this phone. I do not have a forwarding address or phone number for the person they are looking for. I have been using this phone for the past year and 2 months. I have requested numerous times that they romove this number from their system but have failed to do so. I get 2 to 3 calls from this company a day and this is very irritating.