Repair Center broke my new five month old handset

I got my new phone in Feb 2015.In July my phone started to freeze and just shuts down so i booked it in at the Ceres branch and received the job# ***7. At that time the phone wasnt even 6months old.When the phone came back from Tygervalley the speaker was faulty and i never had a problem with the speaker before.They booked the phone in again and it came back RNR stating that my phone was out of warranty. it was booked in again for Lucas attention wiyh the POP and tygevalley sent it to JHB.When the phone came back it was BER.I contacted the repair center in JHB and Benjamin told me that the reason why they BER my phone ,the IMEI sticker wasnt in the phone and that mainboard was damage.In the 3mnth my phone went in for 5times and its still broken. I want a new phone as the Repair center boke my phone and i want my credit back for the 3mnths because i paid for something that i couldn't use.I am verey disgusted by the service and will not recommend anyone to go to vodacom.the job# are ***7,***5,***9,***5 and ***2.In this 3mnths I havent use my phone once.I WANT A NEW PHONE AND CREDIT FOR THE 3 MONTHS.