Company calling you via a calling robot that can access an IVR.
The number is 09 11 57 65.
If you then search the IVR and hang up, someone calls you back and tells you that they work for Orange/SFR/Bouygues and are responsible for giving a discount.
Of course that’s not true (I’m a Free customer), my number was stolen on the Internet as a professional number.
It is an illegal solicitation.