Sending OTP to email while travelling abroad

Busy travelling abroad. Wanted to have my OTP transferred from SMS to email before I left SA, but received a message from ABSA stating that from 6 April, all online purchases will be authorised in your banking app. I also phoned ABSA to verify this and they said that OTP via sms will fall away for all clients with banking apps.

I have now tried to make 2 different online purchases and can't as it still goes to the OTP screen which has to be verified by receiving a code via SMS.

Have mailed ABSA and contacted them via Facebook messenger - explained that I can't phone and don't have access to my sms's. Need my OTP's sent to my email address.

I can't purchase bus tickets online and risk not getting space on said bus when I need to travel.

My number while abroad: +353(0) 83 209 73 06 Alternatively, I am contactable via whatsapp on my "regular" number.