why rented film takes 40hours to download? i want a REFUND

i have just rented Wolverine, and the download now runs for 30kb/s to 40kb if i am lucky which will take about 35-40 hours.....

this is ridicolous, i want a refund.

anyone know the process?

itunes was working fine since last time i used it, which was 10 days ago, therefore i am pretty sure is about their overflooded servers..