Whether it's the norm or not that FICA is a joke, I still wouldn't rule it out. Yes, banks probably don't investigate on their own. In a case like this article I don't see why they wouldn't investigate if it's brought to their attention.Cash is king. It's quite easy to withdraw in a day or two if you transfer it between 10 accounts and banks typically don't even bother investigating once money has left the original account because it always leads to a dead end. And FICA is a joke. It's so easy to get around and with such a large informal housing base it's not even required to be fully implemented. Once they get to the person holding the account they have no info to give them.
Debit cards are easier to do and I don't know why you were even told it can't be done. It typically takes 2-3 days to be debited and then you also don't get paid immediately plus as long as the service is kept alive there's always additional money coming in.
According to the article, the client and provider settled on 50/50 ownership of the problem. I don't understand how this could be done, without even seeing if the banks could find the culprit(s).
Also, regarding my case. The money was deducted from my account and reflected with the website I bought the product with. I contacted them as well and they also responded that the money will be reversed to my account. Due to explicit bad reviews and scam reports online, I then made sure to contact my bank to get the refund. I didn't trust them to have the product as described or that they would deliver it.
As I said, the bank initially said I couldn't do it. The reason is probability just uninformed consultants.