Hmmm, easy one. Putin.
Celestron - just yakk since going to China (someone once claimed the lurid orange and the gawdy, grotesque shaping means you can find it easier after you throw it...no one I know in Canberra said that.... it is a very ROBUST statement

)
Telstra - haven't used em since 2002. No plans to ever again either. Or Obtusless. Westnet has been exemplary since day 1 with them - never an issue that was not resolved within an HOUR. And all on THEIR coin.
So, leaves Putin. Actually, he's the only politician world wide worth a pinch of guano. He lies as much as the others, yet he has character and charisma, unlike Billery, Dump, Obomination, Merrrrrrrrrrrrrrrrrkel, Turnbullsheet, and so on.