Hacked Account

My FB account was hacked. I reported it to Facebook in the normal way, removed the new email address, logged it out of any browsers, changed password etc.

It's now asking for a code sent to my mobile which I am not receiving. I think the hackers deleted my phone number.

I followed their instructions and sent them my ID which they have confirmed however I still cannot get in because it is asking for a code I am not receiving.

I've tried to contact Facebook which is impossible. Any advise?