Owner of my flat taking money 2000 aed for signal...

 It should be noted that after reviewing your inquiry and legal scrutiny we would like to inform you that You shall go to the rental disputes committee in the emirate where you reside and file a complaint about this situation, but if you has filed a complaint and there is no response, we recommend you to go to court and submit a request for "urgent disclosure", where a judge of urgent matters will come to your home and accompanied by a specialist. They will detect this imbalance and appreciate this value and write it in a formal record, then you can fix the imbalance on your account and file a case against the owner demanding compensation for damages that caused to you with the obligation to refund Maintenance. 

You shall attach a file expedited disclosure as evidence in the case to judge for your benefit