Bad service from the online loan department

My husband and I did an online loan application, and sent the necessary documents via email. I then received an email that the format of the documents was incorrect I then resend the documents to *** and I keep getting an email stating that the reference in the subject line is incorrect. I tried calling the loan department and when putting in the account number it says it is sending a push notification msg which I don't receive after a while it says they are experiencing technical difficulties. I then phoned action line only to be transferred right back to the loan application department which I cannot get through to. We did the application online to minimize unnecessary travel due to covid the online process is meant to be effortless but it's been only one big headache