Nonexistent service from Telkom

If I could give you 0 stars I would. I purchased a LTE contract at Telkom Clearwater Mall. The consultant says it can reach high speeds and there is coverage in my area. Between 21 Jan and today,I have more downtime than operating hours.My WiFi is down every day from 4pm to 4am. I was told its unlimited data,unlimited usage.And my modem will connect more than 40 users at a time. I then called the call centre and was told my line speed has been slowed down due to high usage. This was not explained to me at point of sale or I would never have taken this *******. I want to return your modem,cancel my contract,and cancel Telkom and their **** service. I am not paying for a service I am not getting and I was **** to by the consultant. I was misled and want telkom to just cancel. I'm done with Telkom and the consultant that ****.