hard selling
noun[U]
MARKETINGukustheactoftryingtopersuadesomeone in aforcefulandannoyingway tobuyor do something:
Thebigelectricalretailersaresingledout for the hardsellingofunwantedextendedwarranties.
hard-selling
adjective
He wasknownfor his hard-sellingbusinesstechniques.