Should I be worried or not?

It's been three days now that I've been getting calls in the middle of the night, the first time I was able to pick up, it was a man in his 40s based on his voice, he asked me if I was sleeping and if I I was alone, I hung up straight away and reported it, then I received other calls at night but with different numbers each time, I couldn't pick up because I was already asleep.

Should I be worried or not?
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