resolve the problem
1.Would it be right to say
"I hope you resolve the problem soon"
In a letter of ccomplaint?
What other more formal ways ?

2 do you also ask for "a complaint form " in a shop if you feel badly treated ?
And how do you ask for it to the salesperson?

Thanks

Question

resolve the problem
1.Would it be right to say
"I hope you resolve the problem soon"
In a letter of ccomplaint?
What other more formal ways ?

2 do you also ask for "a complaint form " in a shop if you feel badly treated ?
And how do you ask for it to the salesperson?

Thanks

Answer

1. is perfect. Other options:  "Please could you resolve the problem soon."  "I would appreciate it if you could resolve this problem soon."
("solve a problem" is wrong here - "solve" is for problems requiring logic or specialist knowledge.  "resolve" is for problems between people.)

2. "How can I make a complaint, please?"  "What is your complaints procedure?"  Every organisation has a different system for complaints. If there is no system, you could ask: "Who can I complain to?  What is their address?"  (I've not heard of a "complaints book" in the UK or any other English-speaking country)

Answer

My attempts:
1,I am expecting to take the necessary measures to fix the problem. 
2,May I have your book of complaints?

Answer

I would rather use "solve"