Dont get ****med

6 months ago I got a good deal from this company and it was said to me that I will be paying R1758 every 6 months which is a good deal now i find out that it is a once off deal but at the start they told me that while the promo is on there I will pay the promo price R1758 every 6 month now they are changing there story.... so i have put in for a cancellation as i dont now want to pay the new price of R593 per month.... now they say i need to pay for an extra. month.... what a ****...