Some companies are defined as data processors, meaning they have the right to process your data, but they do not control it. So when you send them a reclaim request, they have no way of accessing, controlling or removing your data.
In this case, a separate company, the data controller, is the one who holds your data and is responsible for removing it when you ask so. You might receive answers from processors informing you that they cannot remove your data and that you should directly email the controller.
The good news is that most of the companies in your footprint are controllers and not processors. We are also working closely with data processors to automatically identify the difference and make the reclaim process more efficient and straightforward for you, the user.