App on iPhone 6 shuts down constantly, especially when trying to sync files for off-line use

[slc2nyc]

App on iPhone 6 shuts down constantly, especially when trying to sync files for off-line use.  This issue started over a year ago and Apple tells me that it's an issue with the Spotify app and not the phone.  I've tried re-installing spotify twice, but the issue continues.  Does anyone else have this issue?  Is this Apple's way of trying to force me to use their itunes?