That's a typical mis-interpretation of Rand. Objectivism certainly does not forbid doing good for another person -- it simply states that it isn't man's highest moral purpose. The moral requirement that serving others is the purpose of life would, indeed, be slavery.
It's so tiring reading opinions of Rand based on second-hand knowledge.
Your answer doesn’t address her anti-christian views.
Let’s admit it, individualism can be an ism like anything else.