Call Centre - Absolutely Useless!

<p>I have just tried contacting Momentum's pre-authorisation call centre 6 times & each and every time either the call is dropped after you have spent 2 minutes going through prompts or the call is answered but no one responds. All I can hear in the background is laughing, chatting & shouting. I am highly frustrated as this becomes a complete waste of time - why offer a call centre if its renders useless anyhow. </p>