So here's the thing. I've taken a client from page 60, to page 1 in 6 weeks for about eight medium-high level competition keywords. I charged her a fair amount, less than industry average, and was always polite. However, she has now sent me three of the most aggressive emails I've ever received, and is unhappy with every aspect of my service. She claims the quality of the backlinks (linkpushing, thesilent - two of BHW's finest i.m.o.) are dubious and unprofessional, and is hiring a third party firm to investigate my firm's behaviour! All I can say is, this has been an extraordinary experience for me in dealing with someone's ingratitude and hostility. Does anyone have any advice on how I should handle this?