Thousands of Disney customers say they have been hacked after signing up for their online streaming service.
Since Disney + went live, hackers have stolen thousands of customers' accounts and put them up for sale on the dark web, according to a report.
People waited for phone and chat lines for hours, and many still say that Disney has not yet sorted out their problems.
The company did not respond to a request for comment.
Disney's response to Netflix, Disney + is an online platform where fans can watch their movies, short films and TV shows, including the Marvel franchise and Star Wars.
Ten million people signed up during the first week.
Disney + has not yet launched in the UK, but is available in the US, Canada and the Netherlands.
On November 1
Others said they were locked out of their accounts, and since they contacted Disney, they haven't heard back.
According to a study by Zdnet, thousands of user accounts went on sale on the dark web.
Just hours after the service was launched, hackers sold Disney + accounts for as little as $ 3 (£ 2.30).
A subscription to the service costs $ 7 (£ 5.40) per month.
With the help of a cyber security researcher, the BBC also found several hacked customer accounts for sale on the dark web.
Thousands of these stolen accounts show what type of subscription the person registered in and when it expires.
Customers say they saw their e-mails and passwords changed.
Many say they used unique user IDs and passwords to access the streaming platform.
But Jason Hill, a leading CyberInt researcher, says it looks like many have been stolen because people use the same password for different websites.
Mr. Hill said hackers can lift someone's password from another site that was previously hacked and then try it on a new site, like Disney +. If it works, they steal the account.
"While many may find it difficult to manage a unique password for each online service, password managers simplify this process and allow you to generate and safely store unique hard-to-guess passwords," he said.
The streaming service does not have two-factor authentication.
This is when a separate password is sent at login to verify an account identity.
Others are worried they may be using their Disney + login to access other products is provided by the company, such as the Disney store and its recreation parks.
The online streaming service was hit by technical problems on the first day. People took to social media to complain that their pre-ordered streaming service was not working and that they were facing long waits for customer service.
The company said in a tweet that it had an "overwhelming response" and apologized.