Where to change parking coupons?

[Ping911]

I have a stack of coupons where, for example, you mistakenly peel off wrong year or month etc. They are not fully torn and can be exchanged. Previously long long ago, there used to be these URA booths, where you can go swap the coupons for new ones. But now these URA booths don't exist anymore.

 

Any ideas, where do you go to change these coupons now?

[Weewee1976]

Any of the HDB Branch Office will do.