poor service

my husband bought a contract phone and insured it , now his been asked so many question and was told that the phone stopped working on the 75th may. on the 26th may he went to town and his phone was ****** called and all necessary done as per MTN , he called so many time and no one wants to assist him they tell him all lots of stories , he doesn't have a have and you MTN is going to loose one of your new customer because of the insurance company you associated yourself with. i also have a contract phone with you and he also w3ants me to cancel and am going too because i dont want this to happen to me one day fix this his cell number ********** 058