Given the comments above in relation to VAT-inclusive and VAT -exclusive amounts I don't see that a chat on the phone with the Revenue would do any harm.
The reaction of some posters to even a suggestion that they talk to the Revenue puts the Revenue in such a bad light.
My experience of dealing with them in this current crisis, is that they are tough but fair, and customer orientated.
As I said, the OP can get clarity on the principle of VAT registration.
This doesn't mean you have to make a return or show them your books, as some of the replies would seem to assume.
The OP can then take professional advice - and remember, the Revenue are a State Agency, no crooks - and "its good to talk".
ONQ.