Wi-Fi not working

I'm on contract with Telkom for 4mbps uncapped. I am not getting near a 4meg line. Have reported it twice now but getting no feed back what's so ever. The first ref no. is 598CRK160118 second ref721CRK010218. The first time I got an SMS to say the fault has been repaired and this was not the case. Reported the Second time and now I'm still waiting. Phone the fault department asking for a manager or supervisor was told they are busy. I left my no. so they can call back (regret) still waiting for that call 2and a half weeks now. Most of the time I'm getting 0.96 the best i got was 1.09. On a 4meg line. This is unacceptable. They do a port still no joy. They will not even up the speed. Telkom you are in breach of contract and if I don't get answers from you soon im cancelling my contract and find a better service provider and don't think you will hold me to my contract your service us disgusting. I can't even open an attachment on my emails. That's how slow the line is. I'm not paying for this kind of service. SORRY FOR YOU. My contact no. is ********** 797 hope to hear from you soon.