Vodacom statements unreadable

I have contacted Vodacom for over a year now, complaining that I cannot open their attachments. I have phoned numerous times, e-mailed them numerous times and even put complaints on HelloPeter. They respond only to the complaints on HelloPeter, but even after that, I still cannot view my statements. They've sent me back and forth to support, giving me the same instructions to install software over and over again, which never works. Finally I was then told to mail a certain inbox, asking that they send me PDFs instead. I have done this and now, 2 months later again, I am STILL getting the stupid efa format that I cannot open. What does one have to do to get them to listen. Over a year and I have never seen a statement that I can open... Due to this I cannot query any amount going off of my account. This is a joke