Therefore I held off on the x - rays ; if they were done in the month of May , while I still had insurance . Strangely , I have received a bill from the dentist for $ 93.40 . I called and discovered that it was because Delta Dental is refusing to pay for that check - up on April 21 , in spite of the fact that over the phone they claimed they would pay it . Dishonest and greedy much ?
According to the above context, choose the best option to answer the following question.
Question: Why is the narrator facing a dental debt ?
Options:
- The narrator 's mom   did n't pay .
 - Their insurer did n't pay .
 - None of the above choices .
 - The narrator   did n't pay .


Their insurer did n't pay .