I'm in w-europe so I just meant our local tax agency. And to be clear, I don't owe this guy a dime, always bought from him cash in hand. Him being my weed dealer is the only connection we have, and since weed is illegal here he couldn't exactly claim any of that to begin with.
No, he apparently owes the tax office a large sum and when questioned on how he'd pay, somehow made up that I owe him 15k (letter doesn't even specify what for, services? Goods? If so, what?).
I'm not afraid I'll have to pay it, I'm just afraid it'll take me weeks, months and thousands in costs just to get the record straight.
I'll also have to find a new dealer, which is a lot harder than it seems. I don't have a very extensive social circle.