MTN CONTRACT CANCELLATION POLICY

Customer Service nor Retentions e-mails remain unanswered. No promised call from the 'consultant' assigned to my case after my last visit to store. Another visit to the store for over an hour without success. Apparently I am not able to cancel my contract due to MTN despite lack of connectivity during and after power outages (load shedding and municipal) in the area. Effectively this means MTN do not fulfil their contract with me. It also means that I will have to pay for another contract with a different provider to ensure uninterrupted service. Is this right? Is it fair??