I was called on Thursday the 10th of April by Mtn telling me that my contract will expire in April so I need to renew

I was called on Thursday the 10th of April by Mtn telling me that my contract will expire in April so I need to renew. Firstly this person **** because my contract only ends in November. Based on those lies they lured me into doing the upgrade, told me I’d keep my number. I got the sim today only to find out it’s a new number and my other contract also hasn’t ended. This means I would be paying two contracts. So I want both cancelled at no fee. The call was recorded and it was based on lies that I was lured into this