Worst Service Ever

Telkom phoned me to upgrade my business line to a wireless line, I told them that if they want to do that I need a this line must be used with cordless phones. They explained to me that the phones will be as per my request and everything as is. I received one phone that was wireless and when I phoned Telkom they said sorry that all that will work, they do not have any other phones that will work. My copper lines was closed off and cancelled and I am now stuck with a single wireless phone that doesnt even work properly and it is costing me more than what i had. This is not acceptable and I think Telkom can do more than that.