Mobile Call Blocker

[#1]

Hi their i have been experiencing some people taking the micky using my landline for over five hours of mobile calls . Could i possibly have a mobile call blocker placed on my landline ?

[#2]

Is that people inside your house doing that (in which case, discipline, discipline, discipline!!) or is it someone outside suspected of hijacking your line?

[#3]

people in house who i cant trust mate

[#4]

Well, there's no specific call barring feature available on Plusnet (it's either total barring of all calls (usually used with a hijacked line) or no barring at all), so, the only options are unplug the phone and hide it, or install a payphone set to charge a few pence more than the mobile call charges and secure the phone sockets, or kick out the untrustworthy ones...