I got 2 calls at first which I sent to voicemail then they called a third time so I picked up thinking it was an emergency (not knowing the number) and no one was on the line. On the 4th call it was some automated offer so I hung up and blocked. Came in like 2 minutes apart.
Sadly, if you give your phone number to anyone online you are going to start getting calls from these people or some other group of totally useless scammers. I do not answer my phone anymore unless it is someone that I have programmed into my phone directory.
These people called twice today one minute apart. I suppose it is a way to make people think that it may be some sort of emergency call.