Hi Jen2015,
There is no general right to privacy. However, there are other rights you can sue depending on the facts. For example, did you contract with the financial business for their services? If so, was a confidentiality clause entered into? Was a privacy policy signed? You may be able to sue them for breach of contract.
Alternatively, if you can prove (i) the information itself was confidential (i.e. not available to the public), (ii) the intention/act of doing the transaction was imparted in circumstances of confidence and called for an obligation of keeping this confidence, and (iii) the disclosure caused you detriment, you may be able to sue under the tort of confidentiality. However, you will need to show significant detriment suffered by yourself, a disturbance in the family may not be enough.