Lost database ,My e-mail information lost .

I suspect that MTN lost a database with a lot of info I have received my statements per e-mail and the last time i received it was in February 2015 thereafter nothing also if I try and sign on to MTN self help it says that my e-mail address has not been verified .Can some one pls explain the loss of my info ? I have 3 contract with MTN .<br> I tried to call the call centre for 3 days i a row now but after waiting for 30 minutes every time I gave up