Definitely change your number if you're getting too many spam calls. Even if you didn't do surveys or anything, if you've shopped a lot and put the number in your account and those sites have been compromised, eventually your number gets into databases...
I'm pretty deaf so I don't pick up calls anyway, but I have a pretty automatic stress response to being called, so I hate telemarketer calls. Businesses call, and sometimes relatives, but pretty much everyone knows I won't answer by now, and that I will either get someone to call back or will text. My voicemails get transcribed, so they just leave voicemails. Thankfully everyone else is developing this tendency to ignore most numbers anyway, so my behaviour finally became a bit easier to get away with.
No voicemail or text, no call back, 99% of the time. There are people this policy would be unjustified with, but they would all just call my mother anyway instead of me.