I/write/ complain/ poor quality /your service/ English for Children Course

1. I/write/ complain/ poor quality /your service/ English for Children Course.
2. You/ advertise/ newspaper / there / less/ 20 children / class/ actually / more/ 30 of them / share/ stuffy room.
3. Teacher/ not well-qualified / enthusiastic./ teach / my child / wrong pronunciations and spellings.
4. I/ would like/you/ give refund/ otherwise/ you/ change the teacher/ reduce / number of the children.
5. I/ hope / hear/ you /soon/ get/ quick resolution of this problem.