Torture from manager in top mnc in india

HI All , Seeking your help on this – Little Introduction about me- I am a male, IT private sector employee ,I am software Engineer by my Profession in TOP MNC in India . I am recognized every time for my Work from my seniors and Even Managers.Everyone knows what kind of work I am doing by putting my level Best . Problem : We are having weekend working because ,every time our delivery managers Says project is not in Good condition so you have to work on weekends ,And I am fine with that as well .(I worked on my many weekends and from home and even on my sick leave days I worked ) . One day my Manager forced me to work on Weekend ,I said sir I am having some personal commitments I wont come this weekend because of very short notice ,He forced me to drop a mail to him keeping our Heads in CC .So dropped him a mail saying I am having health issues because of late night working for project deliverables ,Issues Nose bleeding (rise in body heat) ,mouth ulcer (rise in body heat) ,Dental care as well . On that he escalated me to our heads ,And heads also from his side ,they know He is wrong still they are supporting him .For my health issues ,I got escalated ? What is the sense behind this and On top of that he tried to say indirectly to me that you are immature and non-cooperative . In the Organization where People Health concerns are not the Concern But the ‘Excuse’ why should I work there ,and Put down my resignation very next day . After my Resignation day till yesterday I don’t have any problem because I am taking them in positive way .But yesterday again weekend working is there (I am serving my Notice period already) ,I came to office and I am doing my work and left from office after some time ,because I am having some work to do which I already told my senior members . Now my mangers comes in office ,he asked me on phone Where are you ? I told him Currently I am having my lunch and whenever I come I will definitely going to complete my wok. And he said Ok . Now After some time he dropped a mail keeping HR and heads that Where are you ? and then again one mail after some hours . What kind of behavior is this ? He crossed every aspect of decency .My seniors replied that Parag is the best team member we have ,he is doing fabulous job ,so why is doing such micro management on me ? Can you please suggest ? What can I do on this ? I am feeling tortured because of this .