CANCEL THE CONTRACT

Last may not sure the exact date MTN phoned me selling me contract for 6 gigs monthly and airtime also. when data was finished I expected to received new data this month the lady said if i was not happy I could cancel at anytime. now i made call to Mondo enquiring about the data I'm told it was once deal , honestly i would have not taken that deal i took it because they said it had data and o many people at home can be able to connect on the same sim. im requesting the to cancel they are giving me the run around since Friday I'm asking the to cancel they are giving me stories . even now I'm on the line for almost 30 minute waiting to be connected to someone. I'm not happy with their services and they did not make it clear that the data was a once off , means they are reaping people off selling us dreams