Greystar Real Estate Partners review: Real estate commission not getting paid

We are from Gold Quest Realty in Houston Texas we have brought a client 6 months ago almost to 3616 Richmond Avenue #1911 and lease was executed on 09/06/2023 since day one we been asking for these commission, we did everything that was ask for (creating an invoice) and now is been several months that the local manager tell us they are sending the payment to our address on 1001 West Loop South Suite 803 Houston TX, 77027. and we have not received anything they SAY they have canceled these payment already 3 times and resend it and nothing have been received, We been in these address for many years and have NEVER have any issues with the mail especially with checks send to us, we have contact manager to request other methods of payments and they keep saying THEY CANT do anything, we found these very unprofessional that we have work on a client and brought it to your company and now they don't give us a clarification or more important our commission payment for over 6 months now, please reach me at [protected]