When I am reporting the status of some results, should I use past tense？ For example, would it be correct to say, when the test result was announced in the past, "Your test result was failed. I am sorry about that." I know we have "backshift" in English. Does this mean that I can use present tense or past tense in this kind of sentence? For example:
Your test result is failed. I am sorry about that.
Didn't you have my message? I had your message. [or] I have your message.
Am I right that it depends on what the time is that is in the speaker's mind when thinking of the action—whether he/she is thinking of now (he/she still has the message) or of the action in the past (he/she had it already)?