Old Mutual No Response

I'm very disappointed in the service I received from Old Mutual I have a Provident Fund with them via Massmart and I have never received a statement from them for the past 8 years. On the 30 July I wrote an email expressing my concerns and was told a representative will be in contact with me till today nothing and again on the 8th Aug I sent again another email and no reply was just told again that someone will be in contact with me regarding my deductions of my provident fund. It's very frustrating because it's money that is involved and I'm getting deductions every month for the past 8 years and want to know how much I have accumulated so far For such a big organisation and they not showing interest in their customers queries.