Go easy on the sarcasm.
Zimba was pointing out that you were already advised that your case was complex and may take time to investigate.
Also keep in mind that any delay is to your advantage. As things stand, the Home Office could have just rejected your application on good character grounds for working illegally in the UK. That would mean that you would have lost the naturalisation application fee.
The fact that they are investigating can possibly mean that they have found something in your favour. Alternatively, it may be that they will not process your application unless your 10 years of residing legally in the UK are up in September 2020 (and effectively saving your naturalisation fees). So, either way, it could be a positive for you.
Some times the best (and possibly only) thing you can do is to wait patiently. A watched pot never boils (and that is probably even truer when the status of the pot is being published on online forums
![Smile :)](./images/smilies/icon_smile.gif)
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I am not a lawyer or immigration advisor. My statements/comments do not constitute legal advice. E&OE. Please do not PM me for advice.