Inward supplies reported by supplier in b2c. how to show that in my gstr-3b and gstr-9 ?

We had two suppliers, one supplier reported our B2B purchases in his B2C. The other supplier wrongly reported our B2B purchase against a different buyer's GSTIN.

Both vendors were unwilling to accommodate any corrections in their GSTR-1 because now, they had cancelled their old GST registration and doing business under new GST registration number.

Not knowing where to show such purchase in GSTR-3B, we had NOT report them in our GSTR-3B.

If we are required to show them in GSTR-3B and/or GSTR-9, then where to show them ??

Thanks.