Calling that number found it was not in service. "Prestige" banking have no idea WTF. Its ****ing ridiculous, obviously someone did a test with live data - even though I've not given my permission to be used as a Wechat guinea pig.
And now it's 7 days later. Have Substandard bank managed to tell me what went wrong or apologise? Nope.
It happened to a colleague as well, I imagine many people got spammed for this ****.