В ходе переговоров удалось со всеми

В ходе переговоров удалось со всеми компаниями увеличить срок за оплату услуг с 30 дней до 45 дней.

Результаты (английский) 1:

During the talks succeeded with all companies to increase the period for payment of services from 30 days to 45 days.

Результаты (английский) 2:

During the negotiations with all companies managed to increase the term for the payment of from 30 days to 45 days.

Результаты (английский) 3:

in the course of negotiations led to all companies to increase the time for payment from 30 days to 45 days.