Is there any way I can retrive a message I deleted by accident?

Hi ,

What is the model number of the phone?

A Uniden D1760 does not have a message answering machine function associated with it.

If you have a Uniden D1760 and you are asking about a Voicemail message you will have to contact your landline phone service provider and ask them if it is possible to retrieve deleted Voicemail messages as the messages are stored on their equipment.