CONTRACT

A sales consultant approached me for the special that they had,he said i should suggest a friend who would like to join but it won't be in a form of a contract for the both of us so after a while they deducted twice on my account when i went there to complain they told me i have to pay for my friend and myself because i \appearently sighned a contract for 36 months"and they will only cancel the contract once i pay up all the arrears.I DONT HAVE THAT MONEY CAUSE IM ONLY A STUDENT AND IM SCARED THEY WILL BLACKLIST US!!....please help"""