IPhone 6

So my contracted iPhone 6 Plus is bent we went to MTN as it is a contract phone. As the problem is a manufacturer defect it's suppose to be looked at by MTN. However we went and spoke to one of the consultants about the issue the lady said because we took out the contract last year March and because of a 2 month upgrade before the contract that was taken out it would be in January that we suppose to log he complaint as its out of the warranty. I don't think that's fair because the problem onl persisted in February and because of the 2 months prior your initial contract date we would have to pay for the quote if MTN takes the phone in for repairs. As a consumer what if I don't want to upgrade 2 months before? as a consumer having a defect device is horrible and now MTN is not willing to take responsibility of it? Also because of the bent on my iPhone 6 Plus some of the phones functionality is also affected. Screen becomes unresponsive, phone gets very hot and Touch ID also doesn't work at times.