I am trying to contact hotmail to find out why I'm not always receiving emails others send to me.  Is there any form of support or are we in this alone?

In some cases after multiple attempts to send me an email it finally comes through to me, in other cases they give up. They, the senders get various error messages including but not limited to 403 forbidden. WTF??

I've tried clicking a link per the original response to a similar q in the forums & it takes me round & round in circles with no way of actually contacting anyone. Does anyone have an answer that will get me something useful like an email address for support?