Multiple imessage activation messages
My phone is sending multiple (150 times last month) imessage sms to +447786205094. Is there any way to stop this? I already checked the timezone, restart and deactivate and reactivate recommendations available on the forums. still not solved the problem. I have owned this phone for almost a year and half now but this problem is observed in the last 2 months. Please help!!! Thanks!!!
iPhone 7, iOS 11.3.1