Probably more than one of my colleagues have been in similar situations.
I was approached by a client who's reason for leaving previous accountant was constant unresponsiveness of the latter (so my client says), and failure to perform services they were paid for. I.E. while invoice was issued for confirmation statement filing, which was settled by the client, the statement was not filed, and strike off actions were commenced against the company. Charges and settlement of charges are supported by relevant evidence.
In summary, my client wants to file a complaint about the actions and omissions of the previous accountant, but them being not qualified one cannot go professional body route. While it is up to my client what they want to do, and I am not getting involved in the process, they asked me to at least advise where the complaint could be directed to.
While I cannot substantiate other complaints by my client against previous accountant, my experience is that they totally ignore any clearance requests sent via email, and my phone call was answered only once, the tone was rather unpleasant, and no phone calls since have been answered.
Perhaps somebody can give advice what would they do in a similar situation?