Can you find deleted Wechat conversations from iPhone?

“Today morning, I left my phone on the table before I go out to work and my daughter is playing game on my phone. Probably while she is playing my phone and the customer sent me few messages. After 15 mins, I received a call from the manager saying that the customer has sent me several messages but I didn't reply at all. When I see my phone, I found out the whole conversation with the customers in Wechat totally gone. I’m so panic, any solutions of getting them or even whole conversation bac...