They don't even bother to respond

I logged a report on Hello Peter and MTN hasn't bothered to respond. I have sent numerous emails that haven't been responded to. I am frustrated, but I will not let this go.<br> it all started when i would load airtime and or data, it would just disappear when i didn't use it, but i let that go. Then i lost my phone, it took me 3 days to report it because calls wouldn't go through to the call center, when they eventually went through the agents would just hang up. i then emailed them and i got claim forms, i submitted the forms and i didn't get feedback for a week, when i called them they sent me an email saying my phone is not insured, when i am paying the insurance premiums. when i got my phone a Samsung Galaxy S4 i completed the insurance forms to insure my new device, now they tell me that my old phone is the one that is insured not my new phone. why would i insure my old device? I used my work mail to submit the forms, but i have since left my old job. if i knew i am dealing with conniving and devious people like this i would have sent the email to my personal email. i will never ever take a contract with MTN they have the worst service ever. can they please replace my phone.