I know this thread is quite old but let me shed abit of light on this situation.
It's not really nice to be singling out individual or certain countries on whether they are corrupt or justice or whatever that is.
The fact and the matter for Batam is concerned.
Foreigners who intend to PROLONG their stay in SINGAPORE, tend to do this practice (loophole in the immigration system), go somewhere cheap, across the border, have their passport stamped, the next day return to Singapore with a longer visa to stay with their family.
We know how it goes, those who have visas in Singapore expiring in 2-3 days, the immigration have the authority to stop you from entering - this refer's to one of the post which someone have stated before "passing visa", touch and go touch and go.
Everything comes with a price, you treat people nicely, people treat you nicely.
Just my two sense worth.
Sorry, I don't understand your logic. Why would some people doing visa runs from Singapore have anything to do with Batam custom officials being corrupt? Two wrongs do not make one right.