i would like some good advice please.?

this really is quite funny but now im annoyed that there are some evil people around..i had to give up work earlyer this year due to my back playing up and the doctors said i need treatment etc,so i am now on ESA..so everything is going fine untill i get a letter yesterday from comlpiance people saying "someone has told us you have been working everyday"..lol which is untrue ,now she is coming next monday to see me ,ive looked through yahoo and people have said that these compliance people are nasty?..and that they spy ,well they can spy all they like and they will have a very boring day watching me sit on my sofa taking pain killers..but i now feel weird the thought of people spying ,and it angers me that innocent people get targetted and the real theives get away with it..can someone sensible tell me what will really go on..and whoever has slandered me i need to take it further coz i know to stay clear of the liars!!..thanks