No customer service

One of our life policy was in arears and we sent an email to ABSA requesting the amount & account number so we can make the payment and so the details was sent to my email only to find that they sent me an incorrect account number. I have been trying to resolve the query with no luck. Every time I must phone to do a follow and they say they will phone me back but I never receive any call. I have spoken to Sifiso, Teddy and Tsholofelo on different days who were all going to call me back with an update but they never did. Yesterday afternoon sent an email to Tsholofelo and received no response thus far.