No feedback on credit card application despite numerous follow-ups

I app**** for a credit card (***) and was told that I was pre-approved pending verification of my supporting documents. You were able to obtain my bank statement directly from my bank, additionally I sent a copy of my certified passport in lieu of my ID as I have to apply for a new one, and proof of address. Thereafter I received acknowledgement that my documents were received and forwarded to your team for processing. Until now I have not received feedback on my application despite numerous follow-ups which I did not get a response. I don't even know who to contact to withdraw my application because I can already see you have ****ty customer service that I no longer want to be associated with. I will go with a bank that values their customers