Mall Injury and Property damage being ignored

As I was leaving a store on Tuesday I slipped down a little slope outside the store and fell on curbing. I hurt both my knees, my ankle and my arm, and my phone was in my hand which shattered througha screen guard on the curbing. I called centre management immediately and they said they will send me a mail. I made follow up calls, where they say I must check my mails because it is sent. I asked if it's spelled correctly, they didn't double check, just said if it wasn't they would know. So now where does a person stand, the tiles are slippery, there is a slope with no warning signage, myself and my property got damaged, and Mall management is treating it like I'm the one in the wrong.