PSD complaint

159any oral or written expression of dissatisfaction, whether justified or not, from, or on behalf of, a payment service user about the provision of, or failure to provide, a financial service or a redress determination:

1. (a) which alleges that the complainant has suffered (or may suffer) financial loss, material distress or material inconvenience; and
2. (b) concerning the rights and obligations arising under Parts 6 and 7 of the Payment Services Regulations.