"I have already contacted" is a correct and usable phrase in written English. You could use it when you want to inform someone that you already took the initiative to make contact with someone else on their behalf. For example: "I have already contacted the event coordinator to reserve a spot for us at the conference.".
One, I have already contacted the players association to confirm if this report is true.
I have already contacted Air Mauritius and the Home Office and will continue to press them for details.
Primm only has another 12 weeks or so before being catapulted into faculty life, and he is well on his way: "I have already contacted representatives from various companies, obtained price quotes, and negotiated the all-important service contracts," he reveals.
I've already contacted the scholarship committee for the David M. Wall Scholarship and asked if they would defer it for a year if I were to travel to Germany.
Under 10 minutes, and I've already contacted President Obama, Congress and the Senate.
I had already contacted my son's head coach to ask him if he'd be willing to hear Scott's thoughts.
I've already contacted [New York University] to try and see if I can attend school next year, find an apartment, and probably get very long and expensive therapy".
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.