In reply to henwardian:
Good to know other people notice this.
Off the top of my head, recent offenders include:
Local garage.
Estate agents.
Vehicle insurance companies.
job interviewers.
It is actually the majority of people that made any claim to contact again within a time period for the past several weeks.
I think that in future I'll just force folk to give me a time to get in contact with them again rather than relying on them to contact me.