Theft at Virgin Active Balfour Mall

I signed up for gym on the 28th of march, on the 31st I started going to the gym. I kept my items in the locker as suggested, I also locked my locker, when I got home my airpods were missing from my bag. On the 9th of April I went to the gym, locked my stuff in the locker along with my IPhone, 30 minutes later my phone was gone, I reported the matter by the reception and their response was that they are sorry for my loss but there's nothing they can do as they are not allowed to search anyone or stop the operation of the gym. Clearly every day we go to the gym, store our bags only for them to be searched and our items to be ****** without any sort of accountability. Additionally, the person who stole my phone was busy messaging people with my phone while still connected to the gym's wifi!!