My spell check says I should have separated heath and care.
Grammar check turns up nothing.
Perhaps you didn't like the content.
From that response, it is quite clear that you do not know what the term SPAG means. There is no harm or shame in that; it is not an acronym that appears often so it is very understandable why someone would be unaware of what it means.
This would have been a perfect
opportunity for you to ask median for clarification (something like asking 'What does SPAG mean?'). Instead you opted to assume that you know the correct definition and just roll with it. Or perhaps you 'just had faith' that you knew what it meant.