What will the jobcentre do now?

the job centre has put me on a 7 day course that starts tomorrow haven't been properly inducted to the course because they put me on it like 4 days ago however today i woke up today with chicken pox i said i will ring the guy in charge of the course that i wont be able to attend but what does this mean with the job centre they cant stop my allowance because i can still do my job search like emailing cvs or posting them which is what i do anyway.