They claim to be with US medical healthcare department and they'll ask you several personal health questions.  Pretty sure this is not right and not sure what they are using the info for.  They claim it's for a large settlement. I refuse to give them my personal information and ask why they don't have the info if they already have the list of people who had surgeries.

Can barely speak English. Ignore my demands to take me off their list and to stop calling me. They get rude and hang up when I state that I will report them. They Are seriously calling me every 40-60 minutes a day. This has become harassment. I believe they are Phishing.

Consider getting a call blocking device or phone.. You can google them and many are around $40.00 or so. If its a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

Report your callers here, not just to the DNC alone:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2

For text messages: forwarding any text message spam you get to the short code  “7726,” which spells “spam” on most phones, to alert your network operator to the abuse. ATT won't accept 7726 But they will accept BLOCK and return a message that the web site is blocked. forward the texts to 7726 or BLOCK, depending on your phone carrier.

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

FCC Abandoned Calls Complaint form:
http://www.fcc.gov/cgb/consumerfacts/1088D-R.pdf
email:  fccinfo@fcc.gov

To file complaints on Foreign company's:
eConsumer.gov: Report Your Complaint
E-mail: econsumerwb@ftc.gov

The have called me twice or three times a day for three days now. Finally answered and demanded to stop being harassed. He denied ever calling, it was the first call they made to me, etc. I told him to take me off the list, hes aid he wasn't selling anything. I told him I didn't care, and he yelled YOU SHOULD CARE, THIS IS ABOUT YOUR COMPENSATION. I hung up, blocked from calling my phone.

they call and do not say anything.  this happens a lot. I called the number back and it says not in service.