Legal notice for holding the rent amount paid through the broker

Good day, Madam,

I had a deal with a real estate broker in Dubai for a flat located in Sharjah. Paid everything since 17-Apr-19 after almost 2 weeks still no contract presented to me.

I decided to go directly to the building management and found that the broker I contacted did not provide to them the cash and all cheques I have issued, though a receipt was given to me by the broker.

Then the building management summoned the broker asking the later to hand over the cash and the cheques, however, the cash is now lacking AED 1000.

The building management found out as well the commission charge against me by the broker was AED 2000 which is 40% more and an unnecessary additional charge of 300 for PRO services.

Can I make a complaint against the broker?

Many thanks