Following happens from time to time in social circles and social/office situations.

1.Office - Standing with colleagues discussing/having a chat, another colleague would come to join in, and stand infront/beside me that cuts me off from the circle.

2.When speaking, people either interrupts or stops listening or paying attention. Or looks like in their heads, already coming up with something else to say.

For point number one, the things I try tend to make it look like I'm butt hurt or that I've lost frame. How to tackle this without losing frame?

For point number two, I will politely ask them to let me finish or stop interrupting. However, the "stop paying attention" part slides through.

Any advise on dealing with these two situations without losing frame or lookong butt hurt is welcome. Feel free to point out what prior characteristics of mine may lead to this situation.