I am not sure about the magnitude of corruption in Audit & Account Group done by the "prestigious CSP" but what i know is that i have to pay a "fee" for every check issued by the AGPR, Sub office, Lahore.
I also know the "DRAMA" they do in government offices every year on the name of Audit. If you provide them with healthy food, official vehicles and fulfill their other requirements, all your account is cleared without any objection otherwise lot of objections.
So you can imagine the the opportunties available in this group of CSP.