Мы узнали об этой проблеме и написа

Мы узнали об этой проблеме и написали Оператору.
Ждем их ответ по ситуации.

Результаты (английский) 1:

We learned about this issue and wrote to the operator.We are waiting for their response to the situation.

Результаты (английский) 2:

We learned about this issue and have written to the Operator.
We are waiting for their response on the situation.

Результаты (английский) 3:

we know about the problem and write operator.waiting for their response to the situation.