Before you begin your refutation I would first define what the Oedipus complex is.
The term was coined in an 1899 book of Freud called The Interpretation of Dreams. According to my sources, the Oedipus complex is when a child wishes to have a sexual relationship with a parent and also wishes to do harm to a parent's spouse because of jealousy.
Next, I would read the story of Oedipus after which this complex was named. Enotes has a good short version. You can look at the link I provided. In the actual story of Oedipus, he did not want a sexual relationship with his mother and he never wished to murder his father, but the fates intervened and despite his best efforts, Oedipus did just was was prophesied.
Now, to deal with your question. In Act I, Scene II of Hamlet, Hamlet discusses how much he hates his uncle marrying his mother. Many people attribute this to his Oedipus complex. On the other hand, Hamlet's anger could be justified. His father has just recently died (less than two months ago). He says, "But two months dead—nay, not so much, not two."
Hamlet also loved his father, the former king. He says, "So excellent a king, that was to this / Hyperion to a satyr." He is saying that his father (like the Hyperion, a Titan god) was far superior a ruler to his uncle (like the satyr, a companion of Pan that tended toward mischief).