Bad services from the stuff at mall of Africa

I just recently encountered a problem with your company.. more especially from mall of Africa .... I brought in my iphone 6 on the 30th of July for the first time right after my birthday for a screen replacement which cost me around R1200.00... at the time I never really had a problem with your store becauses the services provided was good actually... till I had to bring in my phone again on the 13 of October 2017 to replace my battery because it had a problem of not lasting long and having to charge it for almost throughout the whole day.. I got my phone the next day... and again as usual I had a problem.. my phone then decide to swicth off and not turn back on ... this was on the 30th of October when this happened again... so I decided to take it back to the store because it was still under warranty from the last time I brought it in... I got my phone back again on the same day ... right after that my phone refused to charge again, the battery percantage kept on depleting while i left it on the charger.. until it decided to give up on me and never switched back on again... I then returned back to the store again the next day on the 31october 2017.. that's when I was told that my phone might be kept in the store for 42 hours to make sure it works... and I was told they will get in contact with me to come collect it.. right after that I waited to get notified to come collect my phone but I heard nothing from no one at all that's when I decided to call them to follow up whether I should come collect it.. I was told that they forgot to tell me because their service was down but I should come collect it... as frustrated I am I went back to the shop again as usual that's when my phone was off again when I got there.... that's when I was told to go back home and they will notify me again. After 2 days I called them that when I was told that they couldn't fix it and they referred it to the professionals to deal with it because it seemed that it had a motherboard problem and to wait for 7 to 14 working days.. at that time I was in progress with my exams and I usually use my phone for school eccentials.. I waited till that day and called again and this time I was told a different story that o have to wait for 21 working days... I was constantly doing a follow up as usual but no one was taking me serious... on the 28 November 2017 i got a notification telling me that my phone has just got back from repairs and I was quoted R449.00 for it whereas its still on warranty after I paid R389.00 for the battery when I took it for the first time... and I was told that they gotta notify me again to come collect it.. I waited for atleast a week right after the I got the last notification from them to do a follow up and they telling me a different story saying that they still busy with it , telling me difdernt stories as usual from all the stuff members from that store.. I got very angry about it, still am now and decided to call upon the supervisor/ manager of the store and they started notifying me almost everyday about the progression of my phone.. I went back yesterday to find out properly about the phone I was told that they tried getting in contact wit me that my phone required a password but I was nowhere to be found, which is what they are claiming... that is not true at all because I was receiving notifications from them about my phone everyday for a week about the progression of my phone but I was never told that my phone required a password all this time.. to my surprise, I found out that my phone is not at the store as yet allegedly its still by the professionals and I was told that I might get it before this Friday. I am so livid about this this company and I never accepted such poor servises from this company... this should prove how angry I am about this... my phone has been gone for over a month now.. I will never reffer this company to anyone else.. I still haven't got my phone and struggling so much with it. i hope you guys take this seriously because I wont go down without a fight until I get my phone in a good state.. my phone's job number is MAPH006158... Kind regards, Maria Mahlangu