REPAIRED GOODS BEING PASSED OFF AS NEW

I upgraded my contract at Mtn and received a handset that was faulty. it kept switching off randomly as soon as it was opened. i took it back to the store and waited about a week to hear that they will not replace the handset. they have done a software upgrade. i refuse to accept this handset as i feel it was repaired. i want something that works as soon as you open it. I told the female that an adroid phone prompts you when an upgrade is needed and surely this is not requested as soon as you open the phone.She insisted this is so. I told her i refuse to accept the handset and want a new one, as I am not happy. I told her the service sucks as i already had to wait 7 days to get any feedback and then to be told i was getting the same faulty handset. The consultant had a terrible attitude. She just kept telling me I will not get a other handset and upon telling her I'm going the hello peter route as well as legal wise, she said that i should do whatever I want. You should not be dealing with clients with such a bad attitude Letato Sefari..(repair Centre). I will now take this further with legal wise ( goes against the CPA.).I will not pay 2 years for broken goods TAKE THAT MTN