What is Number phone 2131100901 And 021 31100790?

I have a question is Phone Number 2131100901 And 021 31100790.
– Who is the owner of the phone number.. They call me constantly every day at 2021-11-19 22:57:58

Can someone tell me what to do with 2131100901 And 021 31100790 ?

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Thank you for not being afraid to work hard to give us a better life
Recent, Discussion at 2021-11-19 22:57:58 by anonymous : Blinks