Randstad India — I'm not received relieving letter from randstad India

I'm yusuf my employee code: 1445746
I leave this job without resign in 24/12/2020 from my working company SBI Cards & Payment Services Private Limited.
., but still i'v not recieve releiving letter from randstad india p. Ltd., I requested to you please help because this is urgent for my next company joining.
Please please i requested to you help me for this urgent because i need to submit my relieving letter to my New office to joining the office without that I cannot join the office please I request you to please send me on my registered email.
Working details given below:
client name: SBI Cards & Payment Services Limited
project id: 2745
project name: 2745 SBI NEW DELHI
project manager: Manish Kumar Singh