MPs can assist their constituents in a variety of ways, from making private enquiries on your behalf, to raising matters publicly in the House of Commons.
Keeping the issue private, your MP might write to the relevant department or official, send a letter to the appropriate Minister or make a personal appointment to discuss the issue. These steps can often go a long way to providing a solution.
Making the issue public
Your MP may decide to make the issue public by raising it in the House of Commons, where it will be officially recorded, and could potentially come to the attention of the press and public.
Outside Parliament, and at the discretion of the individual MP, you could request that your MP speak at an event concerning the issue, pledge their support to a campaign or write to the local media on your behalf.