Terminal Annex Heliport in Los Angeles, California

I was given the number to this location to call and talk to the supervisor Laura (who is supposed to be in charge of the zip code I reside in who can handle issues that we have with our mail) and a male worker answered. He told me that she wasn't there and to call back tomorrow. I have already called several times to speak to her and all times I've been told that she isn't there or available. So I asked if there was anyone else I could speak to like a manager or someone higher than her and he gets smart and says with attitude "No, there isn't. She'll be here tomorrow." I tried asking something else and he hangs up. I had called earlier in the day and he had told me laura was not in and the manager had stepped out so he lied to me anout there not being anyone else I can talk to. Basically if you have issues with getting your mail, you are screwed.