Teleperformance — Releasing letter

Address:

Saltlake kolkata

Hi Sir/Madam,
This is Gautam Singh, I was joined igsl on 17 aug 2018 in Kolkata Branch omega building, saltlake as a CSA. But in January 3rd 2019, My mother got paralysis attack, So i need to take care of her. So I leave the job. After 3 month I came back, But the tl said the job was no more. Today i gave an interview again in teleperformance, they said come with releasing letter. I didn't get any releasing letter. Plz help me out this.
Gautam Singh
Emp temp code- [protected]
Date of joining- 17 aug 2018
Phone No. of that time- [protected]
Present phone no. - [protected]
I attached my appointment letter to this mail.