I want to know if the IRS received our tax return for our trust and, if so, will they be sending our refund and, if so, when?

For refund information on federal tax returns other than Form 1040, U.S. Individual Income Tax Return, call, toll free, at 800-829-4933. From outside the U.S., call 267-941-1000. TTY/TDD: 800-829-4059. 

If you efiled it you should be able to check in the program  or  look at the email confirmations you got.