Terrible, terrible service at Non-Resident Hub at ABSA

I've moved from South Africa 12 years ago and recently had to submit some forms to Absa Non-Residential Hub ********** They requested that I send the documents in PDF format this address. I submitted these documents on 1 April 2019 already and got a response that my email contains no documents. I've since tried about 8 different methods, email addresses and even fax to send them these documents. Every time time they simply reply that there is no attachment and that I should send the documents in PDF format. They also asked that I send the same documents to ********** with exactly the same result. No matter how many times I asked, I never got a proper solution. I live overseas, so I cannot easily contact this department. I've phoned their landline a few times, but just got put on hold for hours. It's now been a full 60 days and I've made zero progress.