It's unfortunate that this had to happen to you, and I know how annoying and inconveniencing it can be, especially when they don't give you any ETA. Maybe the game provider is the one carrying out the investigation and they themselves (chips.gg) are not also sure of the ETA, that's why they have no definitely answer for you.

My suggestion is that maybe you give them a little more time. Perhaps a couple of weeks and see if the issue gets resolved.