Who called from 3054551100

I am on the registered Do Not Call list.  Have received several calls from this number within the last week.
how do I get them to quit calling?  I answered 1 call and could not understand them, told them to stop calls.
this was last week.

They continue to call and I do not answer. They go to voicemail but they never leave a message. Idiots.

I responded to an add for a free cookbook which was misleading and this is the number that is calling me about testing supplies. I called them, got an answer and was taken off the call list. I hope (laughing)

This number has called me twice today on my cell phone which is on vibrate because I am at work.

Does not tell you name of company but is offerint free glucose meter..

Who