Plan - premium 

Country - USA

Device - iPad&iPhone 

My Question or Issue

I have had Spotify premium for a long time and have recently started using the audiobook feature. Supposedly this feature comes with 15 hours of audiobook time… I have yet to get through an 8 hour book before I get prompted to buy more time to finish my book… you can look at my account. I have purchased additional audiobook time more than once, and have only listened to a few books less than 10 hours each. I just listen to my first audiobook in a month and was told I ran out of time seven hours in to a 10 hour book…. Which I don’t know if you understand math, but that does not add up to 15 hours of listening time. 7.5 hrs is not equal to 15hrs. That is not, including how fast I listen to the book that is simply normal time. The audiobook is listed at. Please fix this.