Theft at Virgin Active

I have been a member of Virgin Active SA, Kyalami since March 2018. I have used their change room lockers once/twice a week since joining. Two weeks ago my LOCKED locker was accessed and my phone and R2 000 cash was ****** from me, within 20 minutes of my placing it there. In hind-sight, I have seen numerous posters in the change rooms alerting members to risk of theft in the change room lockers and the lack of cameras. To not see these warnings was totally my fault and I take full responsibility. What is totally disappointing though, is Virgin Active's managements' total lack of empathy or action. I immediately reported the incident to the front desk and the Manager on duty was called. My details were written down in a book but other than that the Manager made no impact whatsoever and made no attempt to view camera footage or any other suggestions. If there are so many notices up in the gym obviously theft is a BIG issue and surely Virgin Active needs to take effective action to minimise or prevent it? A week later my personal trainer said she has heard of the incident so it was common knowledge amongst the staff. But still, to this day, I have received ZERO contact from Virgin Active SA themselves. This is truly disappointing. Is this how Virgin Active treats their members?