Adecco — Required hard copy of service letter but Adecco not responding at all

Employee iID:G17996
Deputed to ALSTOM transport India Ltd from the period of 19th Nov 2018 to 31st March 2020. The service letter provided by you is digitally signed because of that Gujarat metro rail corporation is not accepting it they are demanding for hard copy of service duly signed with company stamp. It’s the pre-employment condition to join the organisation kindly do the needful and provide me the hard copy of the same without it I lost my job.
Adecco is not responding at all of my mails