EP Processing time

[lusiribo]

Hello.
My case is like this:
I worked in company A for 11 months and early in this Jun i was fired by my boss because during this period i keep taking leave for interview (i thk my boss sensed it). Luckily company B hired me and give me the offer email. They saying my current application still under processing but I couldn't find any status update on MOM site and already passed 1 weeks after this post.
1. Is there any possible my ex employer backstab me at mom and new employer can discovered (except calling them)?
2. How long for a malaysian to renew their EP switching from company A to B(Im EP holder previously, new job is same field and salary higher than before).
3. I already received offer email from company A, they won't retract the offer ei? (they are big company fyi)