What are you saying about things that you haven’t been made aware of? Doesn’t’ sound overbearing, but it is easily understood. The present perfect tense in the negative(haven’t been made aware ) makes it long(and a little odd, if you see it that way).

On the subject

of this matter, we received no information about the matter.

We didn’t receive any information

on… We did not receive any information

on… We weren’t in our sense… we

were innocently unaware of the fact…