Receive a text message for reporting appointments

Hi
I receive a text message on my mobile every week from Home Office that my next reporting appointment is on xx/xx/xxx if you do not attend appointments without a valid reason you may face penalties. The message is not telling reporting centre location reporting time & reporting frequency. I phoned local reporting centre they said I am not required for reporting at this time. My application is in pending. I did not receive any document that confirm reporting time, location & frequency. Can someone please tell me what should I do? I am getting worried if I could not attend reporting appointments it may effect my application.
Thank you