Users of music-streaming app Spotify have raised concerns that their accounts were hacked, but Spotify denies those claims.

TechCrunch reported that a list with hundreds of users' information has appeared on Pastebin,  a site that allows users to temporarily store text.

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Information Included email addresses, usernames and passwords, among other data.

TechCruch contacted some of the users, some of which said that their account information was changed or used by an "unknown third party."

Some users said they were logged out of the app and when they tried to log back in, the email attached to their account was changed to an address that did not belong to the user.

“I suspected my account had been hacked last week as I saw ‘recently played’ songs that I’d never listened to, so I changed my password and logged out of all devices,” one user said.

Users said they tried to contact Spotify customer service to regain control of their accounts, but are having difficulty doing so.

"The person was able to change my email address without a second verification, and now I’m jumping through hoops to close my account,” a user said.

Another user told TechCruch they are still in the process of getting help from Spotify for their account.

“They’ve not been helpful, and I’ve only succeeded in getting my account locked so far," they said.

Spotify  said in a statement to Mashable that it "has not been hacked and our user records are secure."

"We monitor Pastebin and other sites regularly," the statement said. "When we find Spotify credentials, we first verify that they are authentic, and if they are, we immediately notify affected users to change their passwords."