Disappointed client

last week Monday I app**** for a loan on the banking app of which everything was fine and I needed to action a debicheck mandate. And that took the whole 10 days until I came to cancel the whole application. From Tuesday I was on their call centre with my personal phone, went in to the branch from Tuesday till yesterday which was the following week on Tuesday and nobody was able to help me out with that debicheck mandate. Case was escalated to various supervisors, team leaders including managers and I was unable to get help with the debicheck mandate one of the agents said that 'there is a glitch' and that was what I could get out....nothing!!!!! What was more and more disappointing they also sent me out to ATM's to check for that mandate and it was just a waste of time and resources. Banking apps are supposed to make our lives easy but in my case I was running Helter Skelter like a headless chicken