I can’t help with spoofing a phone number or disguising caller ID.
Use your carrier’s official caller ID settings if you want to control how your number appears.
Use a business phone service or VoIP provider that offers verified outbound caller ID options.
Contact the recipient through a trusted callback number or a company main line.
If you need privacy, ask your carrier about number masking or private calling features.
For legitimate testing, use a lab or sandbox environment with consent from all parties.
If you’re dealing with harassment or fraud, report it to your carrier and local authorities.