I'm trying to link WhatsApp business with third party tool and I'm trying to get the verification code first i get the call from [...] this number and [...] this number and it's showing spam but because of issues on the virtual number I couldn't hear the code now I'm getting "you've tried too many invalid verification codes you'll need to wait a little while before tying again. " is these number are really from facebook or not ?

is there any solution for that ? how much do they use for verfication?