Presenting your case
There are several articles in this website on complaining and writing to MSPs, officials etc. Here are a few other points to consider. How you write can sometimes make a big difference to your success.

An important general rule is to think about how the recipient may react to what you write (or rather, how you would react). That person may or may not be well-meaning, diligent and intelligent, but is probably overworked, with much else to read and think about. How might you react to abuse? Do not think of all MSPs, officials etc as the enemy.

So be brief and concise. Aim for no more than one A4 page, but if there is much supplementary evidence it might go in an Appendix.
Avoid repetition, unhelpful ranting and generalizing beyond what you can actually prove.

If possible, present evidence as exact quotations or at least state that you have it (e.g. from emails, SPSO website, Acts of Parliament, minutes of meetings etc). Avoid merely saying β€œHe/you told me that ....”. Too often such unsupported statements turn out to be untrue – with the whole case collapsing perhaps. This general principle can apply to the presentation of cases to Accountability Scotland if these are to be publicized or helped with. (Of course, most of our exchanges are simply informal.)