The phrase "I immediately contacted" is grammatically correct and can be used in written English.
It is typically used to describe an action that was taken right away, without delay. Example: "As soon as I noticed the issue, I immediately contacted customer service to inform them and request a refund."
I immediately contacted the program and told them that I would like to go to Kabul.
"I immediately contacted the curator to tell him about my discovery.
I immediately contacted Lofthus and bought every plate he had in stock.
I immediately contacted the local authorities to apply for permission to leave China, and booked my plane ticket.
"From the moment I was made aware of the latest media inquiries on the matter, I immediately contacted Uefa to seek clarity.
"When you looked at them, it was very obvious something was going on, and I immediately contacted the inspector general for the city and worked with them to supply all the records we could".
Dutchess Business Services in Las Vegas said it immediately contacted authorities when it discovered it had bought and sold the counterfeit drug.
Last week I published a post on Super Bowl advertising, and I was immediately contacted by a reporter working on a story about to the upcoming PSA spot for No More.
I was immediately contacted by an investment bank offering 4 weeks of work that nobody else wanted: reading some programs and writing a user's manual.
From my personal experience, when I went for my visa interview at the Consulate of United States, Mumbai (India), the officer gave me a sheet where toll-free numbers of various women's rights commission and emergency help lines were given and she briefed me that if I will ever come across any violence or my security issues, I should immediately contact those concerns.
"We immediately contacted the authorities," he said.
