If visitor visa extension application is rejected?

[sevenvoltes]

tourist visa rejected and waiver visa was also revoked

I was applied for a visa for me and my son who is holding a singapore passport and would want to stay in America for more that 90 days.
The officer had rejected our application and unknowingly the waiver free visa was also void because I was already barged from entering in the USA.
I do not see any logic at this point. Will the USCIS give me an explanation?

I have been there for many times and I did not overstay neither do I work.

I was going through the proper channel but was rejected and the most painful part was my visa waiver was also revoked.

Can an american immigration lawyer appeal for my case?
or is there any way wherein I can take back my priviledge for waiver free visa?

[taco]

effect on visa of pending extension app.

Found this relevant piece too;
(g) Effect on 222(g) of departure during pending E/S or CIS application.

(1) Aliens admitted until a specific date. Nonimmigrants admitted to the United States until a specific date who apply for E/S or C/S but who then leave the United States after the I-94 expires and before a decision on the application has been issued are not subject to section 222(g) of the Act if they can establish, to the satisfaction of the consular officer (if applying for a nonimmigrant visa), or to the satisfaction of the inspecting officer (if applying for admission at a POE) that they were in a period of stay authorized by the Attorney General prior to departure. The application must be timely, nonfrivolous, and the alien must not have engaged in unauthorized employment, as provided in chapter 15.15(e)(2)(iv) of the IFM. When these requirements have been met, the alien's nonimmigrant visa should not be canceled. (Revised IN 00-14)