***** Complaint not taken Serious

I am very disappointed with the service or lack of Service thereof. I have 3 funeral policies with Old Mutual, as a result I have registered with their rewards program. With the rewards program portal one is able to manage the policies, which is very convenient. Recently I received a message that there was a transaction on my profile I could not understand as I received notification that my points were redeemed for airtime to a Vodacom number I do not recognise as I am using a cell C number. Ever since I received the notification, I am longer able to access the Portal as my Credentials are no longer Valid even though I am sure that these are the credentials I have been using all along, upon realising this, I contacted Old Mutual via their call Centre, I spoke to an agent who was not very helpful with my query. I then tried calling the rewards department, with no success, my last option was to send mail as at this point I am worried that my profile has been compromised, a ********** activity has happened as the Agent I spoke to had advised that my cellphone number is not the one registered on my profile. My worry is that a week later after sending mail to complain about this problem, I still have not received any feedback or at least an acknowledgement of my mail.