This recompense is their destiny due to what they have committed and their denial. It is not a form of oppression towards them:

  ﴾وَمَا اللَّهُ يُرِيدُ ظُلْمًا لِّلْعَالَمِينَ﴿

 (and Allah wants no injustice to the worlds.) (Ali-Imran: 108)