"has been garbled" is correct and usable in written English.
You can use it to refer to something that has become unclear or mixed up as a result of being passed along without the original information being retained. For example: "The message that was sent between the two offices has been garbled, so we can't make out what was intended by the original sender."
Alarmed that somehow my story had been garbled, I ran to the copy editor to complain.
Some years later, Dykes resumed contact, Healey said, and told her that the letter was "dictated by Mark when he was out in the bush to an Owens employee" and that the contents might have been garbled in transmission.
A plant official had tried to send word to the fire personnel at the main gate about what was going on, but, he said, the information had been garbled by a security guard.
At Hurra on Friday night, this Toronto-based four-piece played a magnificent set – melodic, brazenly catchy pop songs that have been garbled and twisted and punked up to the gills.
Mr. Duff and his colleagues had feared that the young cranes' natural migration impulses could have been garbled by being trucked part of the way south.. "We thought they may head straight north and be stuck in Michigan, but they took off and flew northwest," Mr. Duff said with a hint of relief.
Black Hawk raised a white flag in an attempt to surrender, but his intentions may have been garbled in translation.
And, for a long, innocent moment, everything about this arrangement will seem surreal to the black child, distorted, like a message that has somehow been garbled in the delivery.
Her idea has been rather sensationally garbled in some of the mainstream reviews of her book.
Some conspiracy theorists even fret that the Americans could go after Pakistan's nuclear arsenal.Usually smooth-speaking ISI men have been giving garbled accounts of what Pakistan was up to.
