We provide different features to help block numbers such as Selective Call block and Anonymous Call block. Look on Vonage.com under features for more details.https://support.vonage.com/articles/answer/Selective-Call-Block-13990
If you still have an active service with Vonage, you will be able to obtain this information from your Vonage online account. However, if you canceled your account, you may not be able to obtain this information. Your best course of action is to call our customer service and request for your billing statement.
Can someone help me out?
We provide an installation tool that can assist you in installing your Vonage device (https://support.vonage.com/app/flow?title=Installation_Tool). Within this tool you will be able to troubleshoot and test your Vonage device.