Remove page link from navigation
There are two very different questions here, but I will try my best to answer them both!

The first being "How do I hide a page from the navigation?"

The simplest way I can think of for this, that is also controllable through Craft, is to create a simple "Hide from navigation" Lightswitch field, and add this to your entry types.

When looping through entries for the navigation, you can check whether the lightswitch has been checked, and if it has, don't show that entry in the nav:

{% for entry in craft.entries.section('lorem').hideFromNavigation(0) %}
    --
{% endfor %}


The second question is "How do I redirect to the homepage if someone visits /services?"

This can be achieved with the redirect tag. In your services/index.twig template file, you can simply add:

{% redirect siteUrl %}