Call centre waiting times rediculous,gave up

was instructed to use the in-branch phone for credit card enquiries, sat on the phone on hold for 25 minutes until i left the phone(off the hook) and went to find someone who can help. found someone and explained that im on my lunchbreak and I cant wait forever for someone to pick up the line on the other end, She said she would try from her office and see whoever gets the phoned picked up first ...same story...waiting waiting waiting. I eventually left, without being helped.