deposit not credıted my account 3 days

Hello, Three days ago, I deposited $2,500 into my account with login number 906175. Although the website states that the deposit will be credited instantly, three days have passed and the amount has not been added to my account. I have shared all the screenshots with the company, but they told me they are still waiting for confirmation from the payment provider. They said the process would be completed within 1 to 3 days, but the timeframe has now passed and there is still no result.