Samsung — Samsung company asking to pay amount as a security purpose

Sir i got msg on my phone regarding job on samsung office thru shine.com that my cv got selected.They asked me for my documents like aadhar, degree certificates and mail id.After verifying my documents, On next day they told they will send their kit with softwares for 7 day trainng purpose which includes offer letter and tab thru courier so I hv to pay courier charge 460 . I did the same and now they r asking to pay 2660/- after receiving courier as a security deposit for tab and further software which they r sending thru courier. Now the problem is should I pay or it is a fake company.