Bridge of Contract

I stood in line LAST year November for the black Friday deal 30G (20G anytime and 10G night express) THIS WAS NEVER DONE NOR IMPLEMENTED!!! I went back to the store in Kolonade to fix this, the lady who sold the contract to me informed me all is sorted. Just for me to realise nothing is sorted, after trying to sort it a few times with the contact centre on 808 (which the number now changed) I am still till date paying for 5G Anytime and 5g night express. I went again to kolonade as the guy in The grove MTN informed me I can cancel the contract as it already expired in August?! Firstly no one is helping me with this. Kolonade informed me they are awaiting feedback from head office. Why should I keep on paying for a service that is not being provided? But when I want to cancel this there is no option! But MTN is not doing what was agreed to! PLEASE can someone help me for once and for all, or just cancel both my contracts as the time, petrol and effort that I am putting into getting your mistake sorted is not fair or fun anymore.