You will need
  • Mobile phone.
Instruction
1
In your cell phone phonebook there is a number operator, that is customer service. Call to the specified number.
2
Waiting for a reply, please provide your phone number and estimated content and number of messages you received.
3
Wait for the operations of the operator and click on the "cancel the call".
4
After a while you will see that I was able to unsubscribe by sms.