Making an internal alterations to the property by the tenant

My husband and I are Dubai residents. We have a property in Al Reef in AUH which we rent out. It has come to our attention that the current tenant has made internal alterations to the property and has basically turned it into a salon (complete with advertising outside).

He did not ask us for permission to do this. He maintains he has all the correct paperwork from the municipality which allows such changes to be made.

Manazel has told him that it is not permitted. Long story short, the developer is now giving us, as landlords, two weeks to reinstate the house or they will take criminal and civil proceedings against us.

We wish to sell the property but we assume that it will require some form of NOC from Manazel which I imagine will not be forthcoming given the circumstances.

As we are in Dubai, we cannot get to AUH at the moment. Is there anyone you could recommend to advise us of our options (if any)?