WNS Global Services — relieving letter - please do justice

Sir or Madam, I have worked for 15 long years in Wns at Pune, Magarpatta city Tower 1, for Aviva insurance purpose. In Jan 2020 I had fallen severely ill due to kidney problem. I could not come to office for a month or two.In the message Mr Chandani had told me I was not in office for 3 months which is incorrect.The data he has is incorrect, I can prove rhis. I had informed my group manager Raj Chandani about it. There was also covid pandamic there then in March. I was called to office during covid 19 on the 23 of March 2020
When I didn't go to office they had declared me abscounding. When I called Raj Chandani I asked him that I had informed him about my inability to come to office and that now I was ok to do Work from home. He told me that he didn't have systems.He assured me to re take me to the job in a month and half . But when I called he refused and even the HR later denied giving me my receiving letter. Just imagine when a employee who worked for 15 long years fell ill and could not attend office, the manager directly declares him abscounding. Similar incident happened to a co employee, here she was not ill, her mother in law was having a hand surgery.For this incident she was given a 3 months leave.She had hardly completed 4 years in the company. In my case I myself was ill. Can you guys please look into the matter and arrange for my re-instatement, my domestic condition isn't good.You can ateast arrange for my Experience certificate. I have not been able to take on another job elsewhere.There's lot of injustice in the office. My name is Arvind Manilal Mulekar. Emp I'd 90898. email : [protected]@yahoo.co.in, . Mobile : [protected].