Brothers, ponymen, lend me your ears. The kind people of FO:EQ are largely school-going ponies who may have yet to take their end-of-season exams. I myself am one of them. Understand that after the first FO:EQ printing there was a large change in workers and several of those who left the first printing left, to be replaced by other people. I expect it is because of this that the timing has so poorly coincided with school work and other responsibilities. Do not fear for your books, I am certain they are on their way.
If, however, the end of summer arrives and you have yet to hear from them, I also expect the option to voice your concerns to PayPal will be an option, although this should not be done for a very long time yet.
If you are to take anything from this, stay calm in the knowledge that you will either have your books in hand in a few short months, or you will have your money returned to you after a quite a few months. You have nothing to worry about, everything will be taken care of.