HSBC has just been fined £10m for mis-selling through a subsidiary to pensioners.
Of course it shouldn't happen, but it has done and no doubt will do again.
If you know someone affected HSBC should contact them, if not here's a guide on how to claim compensation:
www.telegraph.co.uk/finance/personalfinance/consumertips/banking/8936206/HSBC-record-fine-how-to-claim-compensation.html
Good Luck!