Pathetic Service!

I have never in my life experienced such pathetic service from any banking services. I have app**** for a credit card on Monday 23 January 2023, the first agent called me back and everything went smoothly, sent all necessary documents up until the call got cut off and she never called back. The following day I requested a call back and an agent called me only to go through the entire process again, had informed him that I have already accepted an offer and my documents were sent I just needed to accept the Debicheck. I now so far have accepted 3 Debichecks which supposedly doesn't appear on your system but at my bank it appears. I have received another call from an agent today stating that I have never accepted the terms and conditions which I did via telephone discussion yesterday with an agent, the call got cut off again! And another agent called me back staying that I have accepted the terms and conditions, I just need to accept the Debicheck and sent another request, this is now the 4th Debicheck I have approved. Your service is pathetic, please provide your agents with proper training as they are running a business but seem to know nothing, your telephone lines are pathetic (calls keep getting cut off), your website is HORRIBLE, I can't even register successfully and neither can your staff at the branches access your website or register their customers, it's not user friendly AT ALL, look into that! I was told that the funds would reflect within 48 hours it's now been more than 48 hours. Could I perhaps get successful assistance on this matter.