Poor service

Hi u know i don't know y @ old mutual they have a call centre because when you call them at anytime they will never pick up their phone mind u using your aitime to call them.Music is playing for almost 30 minutes yet still no one answer.Thats not good at all.I had an investment with them and it has reached maturity stage so I was sent the letter with 2 option which is to reinvest or withdraw.On the letter states if u withdraw u have to swnd necessary documents mentioned on the letter,And with correct documents the payout will be done in 48hrs.So I have done Every thing as requested on their letter I emailed those document 2 times but no one bother to reply on the email to give feedback.I find that kind of service very poorer.