Vodacom misleading clients

I have been a client of Vodacom since 2012 and have 5 contracts with them. I have a 50 gB data package that I use at my beachouse in Suiderstrand. I have done a network Speedtest the past month and it never go above 2.5 mbps. I have reported this problem with Vodacom on various occasions without any luck. I cannot even use my smart TV at this speed.

I now want to cancel this contract. When I upgraded I was offered a router which I declined. I was the told I am getting the router for free. All invoices I received on this package indicates no payment made on a router. Now I am told I am paying for the router and will have to pay for the full duration of the contract if I cancell now which will be over R 5000. I feel Vodacom is misleading their clients when offering free hardware. I am considering cancelling all 5 my Vodacom contract when I reach the end of the contact dates.