Horrible experience

I app**** for a credit card limit increase on the 26th June 2023 and my offer was ready at around 10:00 the next morning. When I tried to accept the offer using the app it can canceled my application when I tried to go back a page to double check one of the loan agreement docs. I then did another limit increase application only for it to pull through as an overdraft application. I then get a call from sales who puts me through to customer service who wanted to put me back through to sales. I eventually managed to cancel my application and put through another limit increase request and heard nothing all day. I then called them to follow up and was told they don't have my bank statements after it was sent through on the initial application that was canceled. Now they are again awaiting bank statements which should be on their system. CAN SOMEONE COMPETENT PLEASE STEL IM HERE FOR CRYING OUTLOUD????????