Fetching details from the dictionary...
to palm off; to force a sale
あの店員はいつも客に変な物を売り付ける。
That clerk always palms off strange items on customers.
彼は私に不要な保険を売り付けた。
He forced a useless insurance policy on me.
彼はしつこく売り付けてきた。
He persistently tried to force a sale on me.