It's important that you understand how EE parses URLs to determine what to display.
Generally it goes like this:
template-group/template/entry
or
template-group/template/category-trigger-word/category-id
The way you described your setup you seem to want to show two templates from the services channel at once (cleaning and reviews). Clearly this can't be done.
There are a number of ways to do what you want:
Using EE's native parsing
Set up your template group, "services". Then create your "cleaning" template.
Within this template you can place a conditional which looks at the third URL segment ({segment_3}) and will then output the required reviews content. This might be done directly on the template, or by means of an embedded template.
Use the Pages module
The pages module is really meant for the occasional static page but you could use it for this. It will allow you to set a custom URL for an entry and also choose which template should be used to render it.
Use Template Routes
Template routes are very powerful and will let you set up different URLs to load specific templates. Within the route you can include rules to make sure your segments are a particular type.
Use an add-on such as Structure
Love it or hate it but Structure can be extremely useful for some sites. This may be the simplest solution for you but be warned, it can bring it's own problems too.
