I have finally had it confirmed from my mobile company Tesco that their system bars the calls to the Jeep 24hr breakdown phone number. They say it's not their fault as they piggy back onto O2 network and it's O2 who are responsible. They also say that any other mobile provider that piggy backs onto O2 will have the same problem and that O2 refuse to make changes.
However a friend tells me he can call the number from his 02 mobile so it' just the piggy back networks
Has anyone else had this problem or a success in contacting Jeep Breakdown on a mobile. I suggest people try it out because they may find themselves in a problem when they least need it.