ESA work problems

I have been placed in the work related group of ESA . I was asked to attend a day course on ways of helping me back into work which i attended , i now been asked by my adviser to go on a week full time course to help me back into work . I really dont feel well enough to go and have been basically told well that tough you must go .

Im not well enough to go so im not going but what santion will i get for not going on this course ?

Will they stop my money ? or will my money be reduced and for how long ?