BGV for Acquired MNC - don't have any contacts or email id

I worked in xxx MNC for 11 months and then joined with another yyy MNC , its been nearly 5 years with the company.
Now i got an offer from another ZZZ company , how the BGC will happen for XXX MNC company?
i dont have any contacts or email id's of anyone of them , except payslips and Termination Letter with reason fake and fabricated documents .
pls help me suggest regarding this .

Hi,
You have stated that you got an offer and the previous company you worked with has engaged you for five years.
And the former (xxx MNC company) has engaged you for 11 months. At this juncture if your second company (yyy MNC) has not done BGC with your first company or got a feedback positively from that company, the matter of the (zzz MNC) third company doing BGC with first company is not relevant, the BGC with second company becomes pivotal here.
I can state you that you be positive on the issue as five years of unblemished service you have on hand for now.