I received a 1099-k that includes refunds, sales tax and processing fees. I also received a 1099-NEC that was included in that number. How to I correct that?

I received a 1099-k from square for total amount sold.  That number included sales tax collected, returned items and processing fees.   How do I deduct those items as well at the 1099NEC that my client sent me that is also included in that 1099-k form because she paid by credit card.