SSN稅的問題 - 海外工作

去年10月H1生效後
我就請公司的HR開始在我的payroll裡面增加了FICA的deduction
可是我這幾天收到一封從Social Security Administration的信
大致內容是說:

Our records show that you have been employed in work in which you
did not pay social security taxes, such as some federal, state or
local government work, some nonprofit organizations or foreign employment.

In the future, you may qualify for social security if:
- You work in a job in which you do pay social security; or...
(以下省略)

我的理解是 "它說我沒有付social security tax"

可是我自從10月生效後 就一直有付
我的W-2 的Social security tax withhold也有金額在上面

我打電話到信中提供的號碼,他叫我打到IRS..說他們負責social security,
不負責tax部分

請問我除了叫公司扣FICA,,,還需要做甚麼嗎? 改 W4嗎??
請問有人跟我一樣的狀況嗎? 該怎麼解決? 謝謝!!


--