yes there is a form in my file on which a condition is written that only be signed if representive or agent used and they have signed my signs on it allowing them to submit or withdraw my application at vfs globl office. there is someone's name i think he is agent and there is a relation written on it with me as i am a client and he is a agent.It might certainly lend some credibility to your claim that your relatives applied for a study permit without your consent. It may/may not overturn the misrepresentation ban. At best, IRCC may only refuse you for the study permit.
Again:
1. Did you sign the IMM 5476 form ('Use of representative') authorizing your relatives to apply on your behalf?
2. When did IRCC inform you that you have been banned for misrepresentation?