Autopay and why support does not respond to my request?question

Hello!
May 16, 2016 Airdroid made me Premium user without my consent, and now does not respond on my questions.
I send 3 e-mails: May 15 on pay@airdroid.com, May 20 on biz@airdroid.com and support@airdroid.com.
In the letter, I ask to turn off my premium account and give me back $ 19.99, as the payment was automatically deducted from my credit card without notice and confirmation.
Why Airdrop does not respond to my questions?

Sincerely,
Greg

Hello!
May 16, 2016 Airdroid made me Premium user without my consent, and now does not respond on my questions.
I send 3 e-mails: May 15 on pay@airdroid.com, May 20 on biz@airdroid.com and support@airdroid.com.
In the letter, I ask to turn off my premium account and give me back $ 19.99, as the payment was automatically deducted from my credit card without notice and confirmation.
Why Airdrop does not respond to my questions?

Sincerely,
Greg

Hi,Greg, could you please tell us your e-mail address so that we can give it a check? Or could you please send an e-mail again to us? We could be reached at pay@airdroid.com. Thx.

Hi,Greg, could you please tell us your e-mail address so that we can give it a check? Or could you please send an e-mail again to us? We could be reached at [email]http://forums.airdroid.copay@airdroid.com[/email]. Thx.

Paypal email: brgrifel@mail.ru
Airdroid email: urbanmedia42@gmail.com

Paypal email: brgrifel@mail.ru
Airdroid email: urbanmedia42@gmail.com

Hi Greg, according to the record, we have made a refund of $19.99 to your account on June 12th, and you should have received it. Please check your Paypal account. Thank you~~