No assistance no help

Good day I’m working in Saudi I haven’t been able to go home since COVID and South Africa is blocked from many countries for months I’ve been calling for them to help me login, change my number to international number, and now that they will change their app I can’t receive OTP or send anything coz I’ve told them months ago that my simcard is in active for not being able to use it and very person I’ve spoken to hasn’t helped me a single bit the bank said they want me to come in the call centers also said there’s nothing they can do to help me. So please tell me what help can you give clients who’s working overseas or is there absolutely no help? Coz I’m tired of calling and being told THERE’S NOTHING WE DO