unaccommodating

/ˌʌnəˈkɑməˌdeɪtɪŋ/
adjective
  1. Not willing to help, adapt, or make allowances for others; unhelpful or inflexible.
    • The store's return policy is unaccommodating, with no refunds after 24 hours.
    • The hotel staff was unaccommodating and refused to change our room.
    • His unaccommodating attitude made group projects very difficult.