Failure to provide avenue to stop account being frozen

Got an sms to say my account will be frozen in 30 days, i should update info for SARS Common Reporting. There are no options on my app as given on the sms I contact secure chat, I am not given answers and directed to call ***. I called 4 x wait in the queue, connect, get transferred then the call is cut.

If 3 channels available do not work, how am I supposed to actually update this info and not have my account frozen?