I Am An Introvert

A relative says she's an ambivert, but she's more of an extrovert, to me. She is too talkative. She tries to talk to me with small talk or shallow conversations, and sometimes I try to put up with it, but I just end up tired and annoyed and explain that I need some time alone. She doesn't understand it, though. She thinks I'm just angry and up-tight. She even got me a drink with a natural sedative in it, today. I'm a calm and collected person. I just don't enjoy talking all the time, especially if it is a bunch of small-talk glued together. If I have to talk, it has to be a deep and meaningful conversation. This also isn't good because I have another relative who monotonously drones on about unimportant things or boring things I can't relate to, and he tries to call me every day. Sometimes when I don't pick up the phone, he'll call my phone three times in a row and text or e-mail me that he called but I didn't answer the phone. It's been two days since he's stopped calling me, so I've somewhat recovered from that, but I don't know what to do about the relative who got me the drink with a natural sedative in it.