Look at me Estella, I'm a Gentleman

When Joe comes to London, he delivers the news that Estella has went back to the Satis House from her training, which causes Pip to want to go back to his old home town, to both visit Estella and also try and better relationships with Biddy and Joe. However, when he finally goes and visits Estella, he is shocked to see that him being a gentleman has had no effect on Estella's opinion of him and she remains uninterested in him. In fact, she tells Pip that she cannot remember much of him in the past and that he meant nothing to her. However, Pip continues to pursue her. Later, he spends time in London with her, he is treated as an escort and not a serious suitor. He is shocked to find out that Drummle is now courting her and when he confronts Estella about this, she tells him that he is the only suitor that she does not want to deceive. This answer does not seem to satisfy Pip though, and now he think that he is even less important to Estella. In addition, it leaves him in anguish because the entire reason that he wanted to be of a higher social class, the entire reason that he moved to London to become a gentleman, was because he wanted to impress Estella, and now that it is not working, he has no idea what to do.