"Whilst the majority of complainants do receive timely and adequate responses to their complaints, it is unacceptable that some complainants have experienced significant delays in the handling of their complaints or received inadequate responses.
"We have acknowledged that significant and prompt improvement is necessary to address this, and ensure this situation does not recur."
The Treasury committee and commissioner credited the FCA for "genuine efforts" to address the issues within its complaints team and its watchdog is expected to provide an update on progress in this year's annual report.
What do you think about the issues raised by this story? Email us on firstname.lastname@example.org to let us know.