Almost half of all people who complain about their broadband connection are left hanging, new research shows. And many others are so disillusioned that they don't even bother complaining when things go wrong with their broadband.

A survey of over 2,500 UK broadband customers by Broadbandchoices.co.uk reveals that consumers continue to face major difficulties in having their complaints resolved. Almost half of respondents (46%) who made a complaint said they were not happy with the outcome. How do you make a successful complaint?

Of those who had not complained, nearly a quarter simply hadn't bothered despite experiencing problems with their broadband service.

The findings came as the industry watchdog, Ofcom, announced that it would make it easier for customers to get help with their complaints. From January next year, communications providers will have to include information of the relevant dispute resolution service on all paper bills.

They will also have to write to consumers whose complaints have not been resolved within eight weeks to inform them of their right to take their complaint to a dispute resolution service.

Michael Phillips, product director of Broadbandchoices.co.uk, says: "We welcome the new rules on complaint handling from Ofcom - more needs to be done to empower consumers and ensure they have the confidence and know-how to get their complaint resolved. In fact, in our survey last year we found that almost 80% of people who complained to their service provider weren't even aware of the existence of the Alternative Dispute Resolution process which acts as an independent middleman between provider and customer in the case of disputes.

"What is also striking from our most recent survey is the proportion of unhappy customers who simply weren't bothering to complain. Over a third said that they thought it would be too much hassle (39%) and another third (34%) simply didn't have faith that their broadband provider could resolve their complaint.

"Their concerns may not be entirely unfounded either, as a high number of respondents (46%) told us that their complaint was not resolved successfully. This has improved since our survey last year when over half (54%) of complaints were going unresolved, but broadband providers still have work to do if they are to win back customer confidence."

Here are some tips for making a complaint:

1. Be wise before the event. Even if your relationship with your broadband provider is running smoothly, make sure that your paperwork is in order. Keep your bills filed in chronological order and keep all correspondence between yourself and the company.

2. Always approach your broadband provider first with any complaints or grievances and insist that they explain their official complaints procedure to you before you enter into a dispute.

3. Tell your provider, in writing, of your grievance and that you wish to enter into an official complaints procedure.

4. Maintain a call log detailing each call that you made to your provider. Include such details as the time and date of the call, and the name of the person that you spoke with.

5. Remember any passwords or keywords that you might need; your claim will lack credibility if you forget.

6. Use bank statements to add credibility to your claims, particularly those concerned with billing errors.

7. When communicating with your broadband provider, be both patient and personable. Don't raise your voice or get irritable. Make sure that you are targeting the correct department and the right people with your complaints.

8. Insist on written confirmation of any changes to your contract, or any verbal agreements that are made over the phone.

9. If you have exhausted your broadband provider's complaints procedure with no resolution after 8 weeks, contact Cisas, the Communications and Internet Services Adjudication Scheme, or Otelo, the telecommuncations ombudsman, and ask them to advise you on the next step you should take.

10. If all else fails, get legal help - for example, Which? Legal Services provides low cost, consumer legal advice.