Wrong HSN code & Heading

Hi I'm Ram, My business is to create Branded AV, Shoot consult etc.

I received an invoice that has a mismatched descripttion.

The invoice is for AV charges (audio/video), but client in one place it mentions Taxable Event Service instead of AV Charges. This is a completely different service and has a different HSN as well.

But actually correct HSN Code - 998383 for AV Charges.

And client said We are registered under the event management category.

so, let me know what to do in this case.