this will put you through to the RSPCA national control centre which is professionally staffed 24 hours a day
or (preferably) email rehoming@rspcacambridge.org.uk
please wait until the evening/weekend for non-urgent calls and be aware that this number is answered by a volunteer who is also trying to do other tasks.
NB this is just an ordinary mobile phone - you will not be charged for more than the normal cost of a phone call to a mobile. We can normally only help you with problems which occur within our own branch area.