The name of this company is Glass Capital LLC and they are debt collectors. If you owe money or unresolved issues with one of their accounts, you will get a call from them. Check them out on the web - search for their name on a google search and you will find them.
They call me all the time and never leave a message. I don't pick up because I don't recognize the number. I think they are a debt collection company. I don't have any debt. They need to stop calling.