Mistakes are opportunities for growth
In the sentence 'By calling every hour, my mother received Jamie's call', the type of error in the sentence is called, Dangling Construction. A dangling clause or sentence, consists of a group of words wherein it does not clearly state what word or words it really describes.
1. My brother and I are reading a storybook our mom gifted us on Christmas Day.
2. Adam does not feel like cycling this evening, he is running instead.
3. Liam is eating his favourite dish cooked by his beloved mother.
4. Leah and Lewis are rehearsing a dance for their performance this weekend.
D. the reader. The reader will always be the one you're writing for, since the idea of writing, especially academic writing, is usually meant for others to read.