Real Canadian Superstore

I went for shopping on Sunday 22nd of September 2019.
As I finished my groceries my cart was full and it is very hard to push. I left at one corner and went to take Tomatoes when I came back in less than 5 minutes my cart was not there.
I tried to find by myself in the whole store but in vain. I requested customers service please announce if someone took by mistake my cart then return to me . But at CS she totally refused me and said I cannot do it.
Then I asked I want to talk to manager. When Steve assistant manager came I told him the story. I was so shocked to hear that he said I cannot help you. There is a chance some one stole all groceries and left the store. I said then it is not safe place I don't understand some one steal all this and left the store in less than 5 minutes. According to me this is a big concern of security and safety of store and for community as well but I was told by him I can't stop this kind of practice. He was arguing with me for so long . I was in the store for 10.30am to 12.30 pm. Steve told me it's good you didn't have value able in the cart. But I can't help you. Then I requested him could you please check security cameras atleast you put his or her pictures in the entrance atleast community will be safe. I requested to check securitycam. Nobody contact me then I called after 2 hours Then I was told by the security that can't find any thing in the camera. So forget about it.
It is totally [censored] that nothing in cameras. My question is this where the cart went.
So please take this matter seriously for the sake of safety and security of customers and store itself.
Please inform me about the investigation at
[protected]@gmail.com
Thanks
Malik