Misleading and False information provided

I was called by a sales agent from Ping'd on behalf of MWEB. Not sure where they got my number from. At the time, my current provider was Telkom which we were quite happy with. The salesman insisted it would be a cheaper option. I kept asking him, are you sure that this is all I would be paying for internet is the R239 a month and I won't need anything from Telkom. He insisted that's all, otherwise they would run out of business. I took up a 6 month contract offer, a month later when I get billed, I am told by Telkom that I still need to Rent an ADSL line, something that was not mention to me by the sales agent. Now I'm stuck with a contract that's costing me much more and experiencing more internet problems than I ever did with Telkom. I had a plan with Telkom for WIFI, there was no need for me to change and fork out more money in pro rata and monthly. The signal is worse, the internet is intermittent and their sales consultants push sales without informing the clients properly. The information provided by the sales consultant was completely misleading.