Very bad service by a highly recommended company

28/04 I paid a lump sum into Sanlam Collective Investments, 03/05 I called them requested that they apply the funds n refund me the difference bcoz they said the investment only allow a certain amount so I paid more, they told me the request will be done within 2 days, again on 05/05 I was told request will be sent to another department to process it today its 09/05 it's the 2nd week the request has not been done my funds are not generating interest n they keep on saying it will be done today or tomorrow