Account hacked

Hello, 

The title pretty much sums it up. My account got hacked while I was asleep and it had the passkey removed while I was asleep. I tried to recover it after I woke up but the email was already changed.

I tried the account recovery form but had no success with it and I do not know where to go now. 

I do not mind not being able to recover it but I would like it to be disabled because the One Drive connected to it has some of my files. 

Any help would be appreciated, thank you in advance.