Fix grammaticality in this sentence: The next day she going to work and someones was calling at her another time but the same thing happened she only hear voice, so she get very frightened and started to thought who can be calling at her, if she had changed the phone number and nobody known her number, the days passed and Maria starting to get sick, she having a very strange disease and the doctors didn't known what to do, someone continue called Maria following she think she were sick because she stole the phones, so she returned the phone and when returned to her house she found a note that said that the ones who stole the phones and returns it will be glad the rests of his lives so the day passed and Maria life fine.
The next day she went to work and someone called another time but the same thing happened, she could only hear voices, so she felt very frightened and started to think who could be calling her, because she had changed the phone number and nobody knew her number, the days passed and Maria started to get sick, she had a very strange disease and the doctor didn't know what to do, someone continued calling Maria so she thought she was sick because she stole the phone, so she returned the phone and when she returned to her house she found a note that said that the one who stole the phone and returned it will be glad for the rest of his life so the days passed and Maria's life was fine.