Adding content to Amazon Prime Video?

I am an Amazon Prime customer and watch Movies and TV shows on my ipad. Prime has a TV show called Heartland and I have watched the first six seasons free. However Seasons 7 & 8 are not available free on Prime but you can buy both as DVD from Amazon. It says on my ipad that I can watch movies etc that I purchase from Amazon. Is it possible for me to buy seasons 7 & 8 of Heartland from Amazon and have them appear to watch on my ipad rather than have the DVD's delivered and having to watch them on my TV through a DVD player. I find it really annoying that Amazon make it almost impossible to talk to an actual person that can answer queries.

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