3 weeks still no repair

I have a Samsung S7 FLAT that didn't want to update the OS to Nougat via the updates on the phone itself and the camera was blury when I took photos. Then I took it in to The Grove Samsung repair center on the morning of 01/11/2017. They have updated the software to Nogat and repaired the camera. On the afternoon of 01/11/2017 I got my phone back from them and immediately noticed that there was a PINK tint on the screen. I was told that it was the screen protector. That night I took off the screen protector and the screen was still PINK. I took back the phone to The Grove mall on the 02/11/2017 and it was manually booked in. I was told it would take 3-5 working days for the repair. It is now the 20/11/2017 and the parts isn't available for repairs. The booking no is: ********** 871 I am just shocked for this type of service if someone buy a premium cellphone from a well known brand like Samsung. Please just fix my phone as it is now 3 weeks and still no phone.