Voicemail and call forwarding

[Anonymous]

Hi 

I have got an annoying problem that I can not see how to solve. 

I use a third party visual voicemail, this involves the call to be diverted when the phone is off. 

it all works but the only problem is that o2 before forwarding the call, plays a message that says: '' Your call is being diverted please hold''. Anyway to get this removed?

[Anonymous]

If it can't be turned off then the op will just have to live with it I guess