Hmm... Wants your bank to put "traces" on incoming payments? "Dear bank, please put a trace on some incoming payments I might be getting from somewhere".
This sounds a bit like a brush off. I'm not sure your bank could or would do that. Needle. Haystack. Wild goose chase.
Still, the rule is 7 days. They won't do anything at all until it's past 7 days after you received payment confirmation.
I can't speak for your patch, but over here, banking is pretty efficient. I almost always receive payment within 24 hours of confirmation. Even on weekends. It's like clockwork.
If it doesn't show up for 48 hours, something is definitely wrong, but Airbnb won't do anything until 7 days have passed. That's the rule. And it's frustrating.