GTA Transporter

Note that For the Month of Oct,22 we  have received  a Bilty Copy  from GTA Transporter   for Tax Payment RCM Basis and for this purpose we have paid RCM (IGST @ 5%)and show in our  GSTR3B (Oct,22) Return but Transporter not submitted his GSTR1 return Upto  Oct,22

Now Nov, 22 Transporter submitted his GSTR1 return Reverse charge Basis but Tax charge CGST/SGST head not IGST head  . after telephone discussion Transporter said that he is right because payment was cullet within state.

What to do now?????????????????