The landline at the current R towers used to belong to a bed shop so when we first moved in we used to get calls asking about beds. Goggling the number and telling the various directories to remove it delt with that.
Work telecoms are plagued with PPI calls. My work mobile number has only ever been mine, is registered to my employer and is shared only with close family and within the organisation gets several a month. Unfortunately the security set up on it means that it only displays the caller as looked up in the address book if it is unlooked, so I answer too many of them. They do go away if we tell them that it is a government secure mobile and they have no right to ring it.
The office, unlisted, not through the switch board, wtshtf, red phone rings several times a day with PPI calls.
