Rude Customer Service Agents

I called Old Mutual regarding my life cover, the lady who answered hung up the call when I told her that the address they have on their system isn't mine and have updated my current address recently with Old Mutual. She just hung up on me. I thought she'd call me back as she had my details, that didn't happen. I called again and I think I was talking to the same person, pity I didn't get her name. I explained that I was hung up on a few minutes ago. The minute I gave her my ID number to confirm my details, she hung up on me and did not call me back. This is pathetic as clients pay money to Old Mutual monthly for premiums, this is so that they have jobs and are able to feed their families but this is how they treat clients. It's really especially after being a client for more than 15 years. I have rethink where I want to move my business