New contract cannot be cancelled without penalties

I had a fixed line product through Telkom. I was happy with my 10GB cap, but was considering upgrading the speed of the line.<br> <br> A consultant came to do a LTE demo at my house and I was impressed by the 40+MBPS speeds achieved.<br> <br> Assuming that my usage would be the same and for only a nominal extra monthly fee I signed up for a 2 year deal with a router.<br> <br> My first debit order has yet to go off, but already in the first month my data usage has jumped significantly. That wouldn't be a problem if the cost of topping up was not insanely expensive compared to ADSL.<br> <br> Bottom line - I was sold a replacement product from the same company which is not giving me the same service. While theoretically very fast I do not notice a vast improvement in general browsing speeds anyway.<br> <br> Now I am told that the contract is in force and since I am out of the 7 day cooling off period (during which time I was meant to compare data usage for a 1 month period?) that I must pay all outstanding penalties.<br> <br> No thank you. Please cancel my contract without fees so that I can get back the product I previously had.