How hard is it to trace the source?
If this is going to be considered harassment, surely it's a relatively simple matter for Commbank to track back to the perps?
If there have been >=8,000 of these messages turned up, it would be an interesting exercise to work out how many senders are at work here, and whether they're just carpet-bombing or actually targeting victims. Surely that's a trivial piece of analysis.
The transferred sums must be small, otherwise the perps are spaffing substantial money just for the lulz/harassment. Does anyone know whether there's a minimum sum on transfers?