Would like to know who called me from this number

I got a phone call this morning and did not answer it because I only use my texting on my phone, and other than that I use the other for caller id purposes. I got the same kind of crank call with no voicemail yesterday from another number which was proven to be a scam, and now I am just wondering if this is the same people with another number. Yesterday the number was 321-443-9136 and today it was 410-419-5029. For some reason they both only ring three times and hang up, but they are so persistant on getting ahold of me for whatever reason. WHY DON'T THEY JUST LEAVE A VOICE LIKE NORMAL PEOPLE DO, OR QUIT CALLING ME ALL TOGETHER.

yes

yea they have called me twice already today too! but im not answering!

Yeah,it's annoying