SYSTEM CANNOT BE BYPASSED TO OFFER SERVICE

I was with Nashua Mobile and we were all passed off onto VODACOM once Nashua Mobile closed down....and we were offered no service.....we did not know we had a new customer provider and we were offered NO SERVICE...my billing was not updated and I have never received an account since that day...all that happens is I get CUT OFF at the end on a month....I then pay and normal get reinstated..HOWEVER this month I got suspended and they cannot reinstate me because they can't bypass there security system in asking 3 questions so they can access my account. I do receive an account and I do not therefore know my package deal ...if i can't answer those questions they cannot help me...I cannot know those questions as I have never received an account from them and as i have paperwork from them I have no idea what my a package is and so although I am PAID UP AHEAD INTO THE FUTURE THEY CANNOT REINSTATE MY SERVICE.....WHAT NOW VODACOM??????