This one tough problem for any instructor. Usually handle it by trying to show understanding and kindness but same time follow the school rules to send a student a message that we will not allow manipulation or twisting the system just because of frequent excuses. Make sure to make clear that everyone has situations but other students manage to attend because Attendence is imporant 

It was new to understand that taking away some work from persons may increase their productivity 

How to deal with frequently late and absent students who use personal problems as an excuse 

For the idea when having an angry student ask him to submit his complaint in writing 

Using the phone in class is the worst part 

I now get strategy to deal with thatComment on Katherine Hillerich's post: 

Setting multiple reminders for due dates. Set the missed assignment standards.I will always remember that rule 

share my background experiences  and give examples and stories about it to make them impressed and excited 

refocus was good tool to learn how to keep them focus 

It help me understand how important it is to build bridges between me and my students before caring about the contentes of the class 

understand  adult students needs and charactrestics . their goals and motivations and their abilities . understand how to use their strenghthes and how to be carful with their weaknesses during the classes