Will I have to worry about a notice that my previous sketchy employer served me?

I had been a part of a company in Bengaluru. All my life all I know is teaching on online platform keeping the point in mind to positively contribute on youtube to help provide free education to all. My original agreement was to serve one month notice or surrender salary for it. They just kept making false promises by holding my raise and not working on it. My financial requirements and medical bills eventually mounted up higher than what they were paying me so I quit. I put it on mail that I am willingly resigning and due to circumstances I could only serve one week of notice. I resigned on 15th but worked till the last week of that month and didn't take my salary for it. Now they serve me a notice telling that I absconded even though I resigned and they replied saying my services with that company is terminated. Non compete is something that cannot be enforced is what I heard. Section 27 or so. See, unless I move to a competitor and teach and stay in education, I will not be able to earn bread and butter. Its like slave labour saying I am not supposed to use MY SKILL later on. The monitory impact from me teaching on YouTube for the companies does not lose them or make them money. Yet they want 10L in damages. I find it absolutely meaningless with their goal to get me fired from the new organization just because I am really good at my job of teaching people for FREE. Lawyers are the first guard of justice. Please help me with some advice here. In a tight spot financially and of course good chance I will be asked to resign from the current company due to legal headache.