This is one of the worst interview experience in my life let me explain why I filled for the Product Engineer Intern in Samsung R&D Delhi(SRI-delhi) Sec 126 on 6th July. After the selection they call me for the Pre-Employment Test on 12th July. After a 3 hrs of coding test which is basically medium to hard leetcode type problem based on graph & backtracking. Fortunately, I have passed all test cases & passed that round. Immediate after one day they call me for the technical interview on 14th July. On the same date HR round was also scheduled. After done with both round. They announced the result & told me that, you have passed all the round only document verification was left then joining. But the worst experience comes here they never send me mail for document verification till this date. On every talk they told me that we are hiring for other job role that's why it took time to send you mail.
On 6th August, they said we are not hiring for this opportunity now.

So, I think please don't believe in any company until they provide you Offer Letter.