Mondo mtn contract sim

Mondo has sold me a lie.i was approached by the consultant to take 2 sim contract which I did because he said I can upgrade for a phone after 20 days .worse part he put me on 36 month without my knowledge. Now am stuck with 2 sim which I asked for cancellation for month which I don't see it happening. Investigation were done and completed but everytime I call .they tell me different storie. Mtn on the other hand is busy charging me for services am not using because mondo does not want cancel the contrac***** been for month now since I approach them but with no luck.i really feel ****med because I could get a phone either as per consultant promise.Worse service ever.i really need assistance asap