Most telephone providers
will do this free of charge if the reason for changing is the
continuous receipt of nuisance telephone calls.
Of course not everybody
is free to do this. Sometimes the number is widely known and
it would not be convenient to alter it. In that instance there
are other methods to try.
It is in fact illegal
for any company based in the United Kingdom to telephone any
individual who has indicated that they do not wish to receive
calls. In order to do this it is necessary for that individual
to have registered with the Telephone Preference Service (TPS).
This can be done online or by telephone. It is free of charge,
and victims of cold callers should not pay third parties to
do this on their behalf as it is quite simple and straightforward
to do it oneself.
This does not, unfortunately,
apply to callers who are based outside the UK, however it will
serve to significantly reduce the number of cold calls received.
Of course the telephone
is not the only medium through which victims might receive unwanted
attention and intrusion, and it is often asked how to stop cold
callers from knocking at your door. Many people place signs
on their doors making it clear that they do not welcome sales
people nor buy at the door.
There are many places
from which one can obtain a sticker containing wording approved
by Trading Standards, and guidance from Trading Standards suggests
that to ignore a sticker making it clear that cold callers are
unwelcome may in fact be a criminal offence.