non existant customer service

Since last year August I have been trying to locate the shares that were allocated to me by my employer and were showing but then suddenly disappeared from the Computershare website. Their website just shows that I have no shares which can't be because I never sold any. The service is absolutely terrible. I have emailed at least 5 different consultants and managers who work there without any success. Every time when any one of them are unable to assist me I'm told to call their call-centre and then I have to tell the person who answers at the call-centre what the problem is all over again. The call-centre has never been able to assist either. Not only have I wasted lots of my time with email communications and telephone calls but I was also told to complete a lengthy online fica process which took at least an hour where I had to supply personal, confidential documentation, and still to no avail.