I was called yesterday evening about my online application and a specific call centre agent was very rude and had attitude towards me

yesterday at about 5:30 i was called regarding my online application. i app**** about a week ago already and was only called yesterday. When i was called the lady on the other end of the line asked me to confirm my gross income, net income and deductions. When i told her that i cannot confirm because i dont have that information on me because its already in the evening of the day she had attitude towards me saying that my application will be declined and what not. when i told her that i was going to complain because its already been a week and she is phoning me in the evening regarding information which i dont have on me she put the phone down in my ear. the manner in which she spoke to me was very unacceptable. if this is how i am going to be treated and i am a first time customer, i will rather not choose to join your network.