Bulk Deletion of completed agreements

Hoping to get some help from the forum on this. Must confess Adobe support in terms of delays and various agents promising a follow up you never get is making Adobe support almost pointless.

I have given up trying to get an answer from Adobe support hence why I am here. We have a build-up of completed agreements in Adobe sign and I would like to delete them. I think it is fair to say for security reasons you don't want to leave agreements hanging in the cloud. Does anyone know of a away of bulk deleting or an efficient way of deleting agreements? Really appreciate some help with this.