SUPER BAD SERVICE FOR A CALL CENTRE

I needed to request funds from my investment, I called the call centre and after holding for about 20 minutes I was referred to a different call centre ********** 000 on which I held on for longer than an hour until my call got cut. On their voice recording they mentioned an email address so I dropped them an email on the 23rd October with my ID number and full names as required. Today, 29th I'm receiving an email from them requesting for the same details that were on the email and they even have a nerve to say I sent the email on 25th which is not right. I am wondering what kind of company this is and will never refer any of my family members nor friends to Old mutual. I find the service disgusting to say the less.