Old Mutual`s incompetence and Bully tactics

Hi all I am really soo confused with this people, i have multiple policies with them that really, they are not appreciating as if they are doing me a favour. I have increased my retirement annuity and also took out educational plan for my daughter on top of policies i have with them. My policies are paid by a Stop Order on my payslip, instead of Old Mutual reguesting my employer to raise the stop order by R444 they instead only requested R434. Now i am always receiving missed premium letters every month. I tried calling customer care a million times and even escalating the problem with no help. I visited their branches and still they just fail to do a simple thing of requesting the correct amount. I am now considering canceling my policies with them, as i am afraid when its time to claim i will be send from pillar to post This is soo *********** of a huge company such as Old Mutual