i do not want to pay for apple music, they said it was free

While you may get access to Apple Music free for a few complimentary months on a trial basis, it is as mentioned above a subscription service you must pay a fee for otherwise. Once the trial is over, payment is due unless you cancel it.

If you got the free trial, then you can enjoy it for free until it ends. You must remember to cancel it before it expires however, as otherwise it automatically renewes and will charge you.

If someone said it was entirely free, they were either mistaken for lying.

Apple Music is a subscription streaming service for which you pay a monthly fee.