Seller refusing to Give proper B2B GST invoice

If a seller gives a gst bill with my GST number from a different state, it would imply B2B inter-state sales involving IGST - is this right ?
But if he puts my GST number from a different state, with his same town and state in address, thereby providing for CGST & SGST - then is this correct ?
Further, won't his such act deny me to claim the GST benefits ?