Pathetic Service

I tried applying for a credit card increase and get pushed from pillar to post. This happens every time. When I initially called I was told to first send the supporting documents and only then they could help. Did that and called the application, the agent did not take all my information which resulted in approval of a smaller amount which would not serve the purpose. After confirming that the information wasn't correct, he asked me to send the documents again. Why? I already sent it. If I can give you the time, subject and email address sent from, why can't you trace it. The agent continuously spoke over me, pushing me to scream to be heard. The rudeness. I can't. Now waiting to be transferred to a manager.