Pag 31

 4.

1. assistí

2. suggest

3. check my records

4. lost in the post

 5.

1. Correct 

2.

3. Correct

4. Correct 

5.

6. Correct

 6.

1. refund

2. compensation

3. faulty part

4. losing business

5. making noise

6. doesn't fit

 7.

1. Costumer relations representative

2.Costumer relations representative

3. Costumer

4. Costumer relations representative

5. Costumer

6. Costumer relations representative

7. Costumer

8. Costumer