I had the same teribly bad advice from an accountant on the last four months but, thankfully, I took a guage from my cashflow and average bank balance before taking their word for it and re-investing my liquid assets.
The accountants are sounding as though they are a bit concerned about this, hence the offer of help. Maybe worth taking a bit of legal advice to see if you have any case. However, any legal case would drag on, be costly and have no guarantee of recovery.
Whatever costs estimate a lawyer gives you... triple it!
If your cash flow is now as fragile as you indicate, legal action could be terminal, unless you can raise money elsewhere to support the business in the meantime.
If you feel as though you have a worthwhile business, it may be wise to do that anyway. Liquidity is essential during an uncertain economy period.
Good luck
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