i called back number (02) 8354 5600 rang 3 times then goes to busy tone.

This company does not exist - refused to put manager on the phone - could not pronounce my name correctly - stumbled all over words when put on the spot (I used to cold call telemarket, I know all the questions to ask to prove if you are legit or not) ringing me up about some "Personal Injury Claim" sounded like a robot in an off shore call centre!