Norton Antivirus didn't work on my Iphone 7 my Facebook account got hacked

   i called 844 757 8828 to report about my facebook account got hacked that why i contact facebook customer service phone number i told them i installed Norton mobile security on my iphone 7 after that my facebook account got hacked i reported it to facebook they told me that norton internet security didnot secured my facebook account properly so i am confused whether i should contact norton customer service number or norton phone number because i lost my 8 years old account