Broken Sony

i renewed my contract with MTN and got a new Sony M5 - everything was fine and now i have a phone that is 2/3 weeks old - i went to the branch where i did my upgrade and wasn't taken seriously - i was told about data/airtime when i have had this contract for the last 11 years and my last phone was a s3 which i had no problems with - i have now been told to go to MTN pav or to call 808 which never gets answered.<br> <br> My phone :<br> dsnt get messages on time - normal or social media<br> cant upload more then 4 pics at a time without this black screen coming up<br> cant make calls-logon social media <br> says i have no airtime to make calls yet i have <br> all internet services are slow <br> i have to reboot my phone about 6 times a day to get my messages.<br> <br> I don't want this phone as i have been put off and use this phone for business resulting in me loosing money - i have also been a loyal customer to MTN and paid religiously every month on time yet i am now stuck with a phone that dsnt work and i get educated on stuff that i already know <br> <br> please address this ASAP as i am now at my wits end and will not be renweing my other number due to MTN lacking in customer care its sad to see MTN declind year after year