Did you get a confirmation email from the contact form? It should be similar to "Spotify Support Case #XXXXXXX". If so, reply back to that email and tell them you still need help.
If you got an automated reply email telling you to check the help section or the community, you need to reply back to it saying you still need help, even if it's from a no-reply address.
If you never got an email, look in your spam folder to see if there is an email in there. Make sure you are checking the email account you used to sign up to Spotify. You can check the email on your account here.
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