Disabling Telemetry

I purchased a Windows 10 Pro license and feel strongly that as a paying customer (rather than someone that was "gifted" a copy of the Home edition when I bought my laptop), I should have a degree of control over the operating system.  I've disabled telemetry every time W10 is installed, and every time an update comes down, it gets turned back on with no notification that this change has been made.

So, a couple of questions for the team at Microsoft.

1. If I've opted out of providing telemetry when the OS was installed, what part of the EULA gives MS the right to turn it back on?
2. If there is a part of the EULA that does give MS the right to turn it back on (even though I explicitly opted out when the OS was installed), where in the EULA does it say that it can do so without telling me there's been a change?

This is not cool.  I purchased an upgrade, rather than simply installing Linux and being done with Windows altogether, because I believed that by doing so I would have a greater degree of control over what data is shared with Microsoft.  To be explicitly clear, I don't enjoy being anyone's product.  That's the whole point of mass data collection, and I get it, this is the business model most massive tech companies have adopted.  However, I bought my OS from you and while the proprietary nature of the OS itself is yours, it's installed on my laptop.  I own that hardware.  The line dividing what is yours and mine is at the threshold of my hardware.  When you ask if I want to share my data, and the answer is no, why is that response not honored?

Lastly, what registry setting, config file, system setting do I need to tinker with to permanently turn off telemetry?  To be fair, if MS returned to actually testing its software prior to release rather than depending on production environments to find defects, and had an explicit telemetry setting for collecting crash/error logs, then I would reconsider sharing.