This is "Don't Be Afraid of the Dark" from 1973.
The wikipedia description seems to fit quite nicely:
Sally soon begins to feel unsettled in the house. One night while
sleeping, she is woken by voices whispering her name, and an ashtray
mysteriously falls off her bedside cabinet. However, Alex dismisses
her concerns and believes she is suffering from nervous tension. The
next evening, when she is alone in the house, something grabs her
dress as she is walking down the stairs and she hears voices
whispering "We want you". She manages to free herself and sees
something scuttling away behind a curtain, which she believes was a
small animal of some kind. Soon afterwards, she hears the same
whispering coming from behind the fireplace in the basement den. When
Alex returns home, he remains unconvinced of her story, but makes sure
the fireplace is bolted securely shut to reassure her.
The following night, Sally throws a dinner party for Alex's work
colleagues as he is up for partnership at his law firm. During the
party, Sally sees a small, hideous goblin-like creature near her leg
under the dinner table. She screams, but nobody believes what she saw
as the creature quickly vanishes. Alex grows impatient with her and
thinks she is becoming delusional. Later, while Sally is in the
shower, three of the goblin creatures make their way into the bathroom
and turn out the lights so that they can attack her with a razor. As
Sally turns the light back on, the creatures shriek and retreat from
the brightness into the bathroom cupboards where they disappear. Sally
then tells Alex that they should sell the house.
