Dual name in pan card and ownership proof electricity bill

Dear sir/mam,

I have applied for new gst registration, where i have received dual surname SCN notice, bcz i have different surname in my electricity bill and different surname in pan and aadhar card. 
what should i do here..?how can i reply here? Should dual surname/name noterised affidavit is sufficient document for the said query.
Please do the need full. 

Thank you.