Incorrect information communicated to client

I'm really frustrated as I have been calling Old Mutual for months now. I have several policies with Old Mutual and changed my bank in May. I requested my bank details to be amended for my policies, and for some reason one policy didn't go off as a deduction. I call Old Mutual agent advises amended, no deduction going off. Policy goes in arrears, in the process of being lapsed. Call old Mutual, agent transfers me to agent dealing with lapsed policies. Agent advises me policy will go off end of July and will be sorted. No policy goes off. Call again, another agent advise to make a payment at post office and it should reflect within 2 working days. Did the payment, call after 2 working days, another agent advises that I must email proof of payment. Did so, I receive an email stating 4 months in arrears meaning R117 x4 = 468. Today I receive another email stating I owe R820. How is this possible. What type of client service is this, pathetic