Worst customer service ever experienced

If I could give 0 starts I would. I've been in contact with their ficadocs (KYC) department since May 2017 trying to change my residential address to my current address in Ireland. And they have recently told me (after various attempts and struggles from my side to explain my situation repeatedly to them) that they have updated it. But they were outright lying, nothing whatsoever has been done.

I cannot phone their stupid call centre from overseas, it won't accept the key prompts for some reason. I only get confusing one-liner replies from them, and each time I have to wait at an average of 2 weeks for a one-liner reply from them when I ask a question.

I have to be honest, I expected some kind of service from a bank such as FNB. But I feel like one can't complain about the service, because there is no service being offered here.