Telkom

Telkom...I have had my Telkom phone for years. 3 months ago I started getting phone calls from people stating they received a missed call from my number. I reported it a few times, eventually getting a sub contractor guy come to investigate. He said he is very confused how this is happening. I had to change my bill to itemized billing, and get a identi call phone so that I can record the numbers and see if they come up on my account. Who is doing the work???? It is really annoying getting these calls. I am in Cape Town, and all the callers are from Johannesburg???? I am really close to saying goodbye to Telkom!