ABSA Bank non-responsive

Cannot get any response from ABSA about my wife's Fixed Deposit which ABSA renewed automatically. Emails remain unacknowledged or unanswered, despite numerous attempts to request a receipt and the interest rate. Was told that under Lockdown level 4 some branches in Pietermaritzburg would be open, none could be found. Downloaded their list of branches which should be open; it seems that they all should be, but are not. Email again not answered. What is one to do in light of such pathetic service?