Inspiron G5-5090, extreme overheating

Hello,

I have just bough this desktop about 8 days ago and its i7-9700 heating to extreme levels just 5-10 minutes in of doing any CPU intensive task due to the horrible stock cooler that comes with it. This stock cooler is nowhere to be seen before buying the product. The marketing material for this product is massively misleading. 

Logging in from the Dell website and selecting it:

You are presented with this this CPU cooler:

which many people (including discussion) base their opinions on. However when the package arrives you are presented with this horrible stock cooler.

Just running the Dell diagnostics that comes with the Desktop itself shows these values, after, get this, 2 minutes. Yes, in 2 minutes you see the CPU running to its TJmax values:

Without undervolting the CPU or limiting the FPS it is impossible to prevent throttling, and sometimes resets. I am scared of using it as I fear its going to die any moment.

I have opened support requests and was told that upgrading the cooler shown  is not an option, even if I am willling to pay for what was SUPPOSED to arrive with the Desktop as it was presented in the marketing material. Now the onsite engineer is going to replace the CPU cooler and the thermal paste but the result will be the same regardless.

Can you tell me where I can move this to the next level, to actually pay for getting the cooler which will NOT kill the CPU and which I can use it at least for 1 year?

I obviously don't want to cutout the WELDED backplane to install a custom fan just to have the temperature under control and have it out of warranty.