Repairs Returned Phone Damaged and Refuse to Fix

I booked my Samsung S4 for repairs with MTN Fourways Crossings. The lady who helped me checked the phone for any damages and scratched before it was booked in. After a week my phone was returned with A CRACK inside on one of the *****s.<br> <br> The Repairs unit refused to take it back and wanted proof that it was not damaged there initially. I then had to go and ask the Fourways Crossings attendents to check the booking form in their files as this is the checking sheet that was used to book the phone. This is the proof that MTN holds to show the condition of the phone they are booking in. Fourways Crossings eventually resent the phone back to Repairs and only to come back 2 weeks later and nothing had been done about the damage THEY MADE. <br> <br> This kind of non competence being exhibited by MTN Headquarters repair centre is not acceptable. I am going to take legal action if nothing is done about my phone. I am not going to budge and be bul**** by none competent people who tell me that my phone was damaged when it only went in for a software repair and now there is physical damage.