Old Mutual poor arrogant customer services

I have a retirement annuity investment. Instead of paying monthly premiums I requested to pay quarterly since I received my remuneration every quarter. Now my situation has changed. In April 2023 I went to Randfontein branch to request for a change in collections back to the monthly premiums. This never happened and I visited the branch again in September 2023, they submitted my request only to be slammed on my face with an email that it is no longer allowable , not even a courtesy to call me and explain why. Today I visited the branch again for the third time. They connected me to customer services. Twice the phone was hung on me while talking to a consultant and the third time the phone kept ringing till it was cut. The branch was so helpful but Customer service not helpful. So as I stand I don’t know where I stand. The collection would come and I won’t have funds and my credit profile would affected. Perhaps it’s better to close the fund and try to invest elsewhere!