spudwars,
Here are the steps that are required for Google Business Verification.
To get your Google business verification code by phone, you need to:
1. Sign into your Google Business Profile and choose the location you wish to verify.
2. Click Get verified and select Phone or SMS as the verification method.
3. Answer the call or open the text with the code. Make sure you can directly answer your business phone number or receive texts.
4. Enter the code into your profile to complete verification.
The step you want to make sure of is step 3 as when you answer the call it will tell you a code to put into your Google Business Profile.
This can be answered by anyone, but you need to know where the number provided goes and that is the number associated with their business not yours.
Thanks,
TE