Absa life policy

Good day I'm Lizelle Williams my mother is 80 years old and she has a problem with Absa life policy. Absa don't deduct for several months now.I went with my mother to Denlyn branch and we phoned them from there.The consultant I spoke to said there's a problem at the bank so my mother spoke to the branch manager and he said the problem was with Absa life so my mother asked for the account number for the Absa life policy and made a cash payment.So the next month it happened again then I took my mother to Absa in Silverton and phoned them again and said they will fix it but now it's happening again.What can I do to fix it my mother is old and cannot go to the bank every month and she doesn't have transport.