How do i get my teammates to listen to pings

Specifically botlane?

Like, let's take last game for instance. The enemy lissandra got fed early because of the enemy trundle literally unendingly camping me for like the first 5 minutes of the game, in addition to my jungler dying to her. (Thats not what im here to complain about, just some context.)

So she hits level 6 and she just roams bot and top constantly (since i was playing extremely safe and she was bored i guess.) I spam ping mia and danger every single time (i was shoved in, behind, and an immobile mage. i cant outroam a lissandra.) My teammates just completely ignore the pings and die over and over again and lissandra is like 9/1 by the 12 minute mark because they just kept ignoring my pings everytime.

This isnt just one game im pissed off about. I feel like 85% of the time when i ping my bot/toplane because my laner is roaming they just ignore it and die. At least 50% of the time they will flame me too.

So, like, how the fuck do i get people to listen to pings? Because im tired of enemies snowballing out of control just bc my teammates are oblivious.

If it helps, my pinging method is that i ping MIA on my lane 2-3 times, then ping danger on the lane that i think they're roaming to. This is mid-plat to low-diamond elo.