Phone ****** by Jet employee in the store

On the 10th of May 2024 I went to Jet stores to purchase things I needed. I went to the change rooms to try on items. As I was busy in the change rooms, my phone rang and I answered it. When I was done with the phone call I placed the phone on the chairs placed in the fitting rooms. When I was done trying on the items I left the fitting rooms and forgot my phone there. I was the only person in the fitting rooms at the rime. I went to return the items I wasn't buying and then proceeded to the tills for the one I wanted to pay for. I realized whilst waiting to make a payment that I had left my phone at the fitting room. When I went back I found a Jet employee cleaning the change rooms and the chairs were now placed outside the change rooms. I asked him if he had found my phone there and he denied it and told me that there was a lady that went in the fitting rooms after I had left. I asked him to show me the customer and he pointed out a lady walking around the shop. An argument started between me and the employee because people that had accompanied me to the shop also said that he was the only person that went in after I had left. The store manager noticed the argument and came to find out what was going on. We relayed the story to her and then she informed me that she could not do anything about the situation but would contact me on Monday. I was contacted on Monday and informed that they had footage of what happened. On the footage it shows that he was the only person that went in to the fitting rooms after I had left. I was then told I would be contacted again after investigations were done and that I need to make sure that I have my phone box with me the next time I get called to the store. I received a call today 17 May 2024 informing me that Jet stores will not be doing anything about the matter. Reason being that there is no evidence that the employee took my phone because they don't have cameras in the fitting rooms to prove that he took it. This is a problem for me because this person denied and chose to tell lies about someone being there after I left, and the footage shows that he ****. Why would he lie if he had nothing to hide? I am now without a phone because of Jet's employee but the store chooses not to entertain the matter. I would like for the employee to either return my phone or pay for a new one. Please revisit the matter because logic and common sense shows that he took the phone but it's just easier for the store not to do anything about this situation.