Chinese lender Aoyin claimed it wasted $5 million trying to establish a locally incorporated bank in Australia due to flawed advice from PwC.  The claims include failing to act with reasonable care and skill, breaching its retainer and engaging in misleading and deceptive conduct.

https://www.afr.com/business/accounting/pwc-blamed-by-aoyin-for-failed-banking-licence-attempt-20180719-h12w9h