Frustrated.

I had a hold put on my account on the 9th April 2021 for a rental vehicle. I have since paid the invoiced amount to the rental company, but the hold has still not been reversed. They said it takes a month to have the hold reversed, we have now passed a month and I am still not able to have this sorted. I have logged a dispute, and still no response. I have tried calling the call center, it always ends up going to the android who cant assist. I did a secure chat on the banking up and the consultant told me that they are having technical problems and couldn't help. I just want my money reversed back into my account.