We regularly get all of the different numbers...616-597-4101; 240-389-6635; 866-841-7507; 571-283-6424; 201-373-8349 with names like Minex, HSBC, ICG for HBSC or TN removal line in different combinations (i.e. one day the # 866-841-7507 will appear as Minex, then another day come thru as HSBC). At least I know they are all basically the same company. So far I have not tried to call back any of them because I assumed they were all telemarketers.
I keep getting calls from 1-616-597-4101 on my Vonage account with caller ID TN Removal Line. I did a search on the internet for TN Removal Line. I found a link to the website for an internet company called Tellurian Networks. I get a lot of calls from disconnected numbers. Perhaps all these calls are coming from bootleged numbers that can't be traced.