Can Vodacom read emails thoroughly?

I sent Vodacom various emails detailing my on-line problem.<br> <br> They first called the number of the modem (I explained to them that no-one will answer that number as it is the modem - had they READ the email they would have known that). <br> <br> They called me Saturday 18/04/2015 around 13:50 on my cell phone when I was not at home. I also stated clearly that I use the phone from Monday to Friday 08:00 - 17:00. On weekends I don't bother taking the phone with me. Again, had they READ the email they would have known that - I mentioned it. Anyway, I gave them four emails to respond to.<br> <br> According to them it is up to me now to contact them. I do not see it like that: after two failed phone calls they give up - failed because they did not read an email properly..<br> <br> I have been down this road before many times: send them a detailed email but they still call and ask what the problem is, then onto another person - another explanation. It seems that they do not read emails but use software to scan for numbers which they then call. Why can't they respond by email? <br> <br> If the written language is a problem why bother having an email option?