With abandon

[Marat mahandy]

Cornfeld was notorious for asking his employees if they sincerely wanted to be rich, and every day a dozen wolfish young men demonstrated that they did, they sincerely did. With ferocity, with abandon, they crashed the phones, cold-calling
Интересует слово
_abandon
Crashed
В данном контексте

 

[Kalaus]

Вам нужно не слово abandon, а выражение with abandon.

 

[alex_s]

In this context I would translate "with abandon" as "не задумываясь".
"with abandon, they crashed the phones "
Не задумываясь набирали все номера подряд.