Complaint not addressed by Ster-Kinekor

On Sunday 10th January my husband and I attended the 5.30 show at Northgate of Spectre, the James Bond movie. There is obviously a problem with the screen as there was a bright blue dot appearing on it throughout the screening of the movie. There was also a problem with the sound proofing as one could hear the sound of the other movie in the theatre next door. I did draw it to the attention of the person on duty and he apologised and said that he was aware of this. On the Monday I called Ster-Kinekor and told them what had happened. They promised to get back to me. It is now Friday and I have called twice but still no response. Are Ster-kinekor not interested in their patrons?