E book payment pending

I just bought an e book from them to study for a test I am writing tomorrow, they took my money but their website only says pending payment. I am very disappointed as the only reason I bought an e book and not a physical is so that I can have it immediately to study today. I tried to call but there was no answer it is Sunday so this is understandable but if you want fast delivery on your E Books don't buy from these people.