app/Http/Controllers/Settings/SubscriptionController.php
public function updateExtraBillingInfo(Request $request)
    {
        Auth::user()->extra_billing_info = $request->text;

        Auth::user()->save();
    }
public function updateExtraBillingInfo(Request $request)
    {
        Auth::user()->extra_billing_info = $request->text;

        Auth::user()->save();
    }
Update the extra billing information for the user.

@param  \Illuminate\Http\Request  $request
@return \Illuminate\Http\Response