One of the major drawbacks to posting a phone number on the internet is that your website is scanned hundreds of times a day by robot scripts looking to harvest any information they can collect in the hopes of spamming you or selling that information to someone else.
I'm sure I'm not the only one who receives many phone calls per day though. It has gotten so bad that I rarely will answer the phone unless I recognize the phone number and the person calling displays their name. This has the unwanted side effect that I might be missing out on a potential job from someone making an inquiry. So many of the phone calls I receive are from my local area code which makes it almost impossible to determine if a call is legitimate or not.
Since no solution is coming anytime soon from the FCC to regulate spamming calls, I would ask that if you are calling to make an inquiry that you please leave a message on the answering service. I will always return a phone call no more than 24 hours from receiving it. Please be assured there is someone here to help you with your project.