How to call a model with one to many relationship in Laravel5

I have a model like this

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Invoice extends Model
{
    //
     protected $table = 'event_invoice';

     public function payments(){
        return $this->hasMany('App\paymentrecieved','invoiceid');
    }

    public function comments(){
        return $this->hasMany('App\comments','invoiceid');
    }
}

Now if I want to get the invoice with all the payments and comments, How should I write the call

I did like this

         $invoice = Invoice::where('Id','=',$id)->payments()->comments()->get();

Its throwing error

Call to undefined method Illuminate\Database\Query\Builder::payments()

Thanks & regards

via Chebli Mohamed