How can a real estate agent claim commission from agency after resignation?

I am working as an agent with a real estate agency. I am new to this industry, just got my visa processed which is why I am still looking forward to applying for RERA.

I sold an apartment in an off-plan project which is exclusive with the broker I am working for.

The client has paid 20 percent on which the commission should be released, but it has been 2 months I am begging for my own money.

Due to all this unprofessional behavior, I resigned and still looking for some help to put pressure on them. I have my name on the SPA and the buyer is also with me.

I want them to pay 2 percent which was agreed verbally, without deducting the visa cost which is mentioned on the contract.

Please advise.