Namaskaram amma.
Your predicament is quite understandable. If our daily responsibilities do not require us to interact with such people, then it is easy to avoid them or just have a cordial relationship at a distance. But if our daily responsibilities require us to interact with them, it is challenging. We can not change them. There are a few changes we can bring to ourselves that will help us pass through such phases without getting our own mind disturbed.
Firstly, we can fill our life with satvic inputs so that the rajo-tamo (RT) inputs get diluted away. For example, you can continuously play your acharyan’s or Velukkudi swamy’s upanyasams at the background throughout the day. Hearing sat-vishayam more and more helps us become unaffected by the bothering circumstances of this impermanant world. It is easier to maintain a “this too shall pass” attitude. And hopefully, since the upanyasam is playing loud, those around us who are predominantly in RT will also get gradually moved towards satvam. But, if they do not let you play the upanyasam aloud, then hear with a head-phone.
Secondly, we can change our perspective slightly. Instead of seeing them as someone who is predominantly in RT and spoiling our mind, we can see them as patients suffering from RT and we are the nurse assigned by Perumal to attend to some of their needs. A nurse does not get affected by the tantrums of the patient; instead goes through his/her responsibilities simply as a matter of duty. A nurse can also pray for the patient and it is likely to bring about the desired change in others.
This is all that I could think of; hope by acharyan anugraham you are able to handle the circumstances well and sustain yourself in satvam.
adiyen dasan.