service is a 4 letter word

I have had my 8.ta hacked and have lost data at a rapid pace, I tried going into the Telkom office at the Galleria in Toti but they sent me to the call centre who gave me a two hour runaround and no answers, then I sent off 3 e-mails and I am still waiting for a reply. I see other people have had the same complaint so I wonder if Telkom have not got themselves a giant hacking problem that they are keeping quiet about, I can also not get any information on my data balance as it just comes up with Greek gobblede**** - would love to get some answers and my data watge problem solved as I have lost more than 20gigs in the space of one month where I would normally only use about 5gigs, please help