If you are in the USA, then what you received are unsolicited marketing phone calls under the TCPA, a law which allows you to personally collect up to $1500 per violation of the law or associated regulations, per phone call that you received. If your personal phone is on the federal "Do Not Call" registry, it's possible that there are at least two violations of the law per phone call you received. I would suggest sen…
Using Facebook Business Tools requires you to accept an arbitration clause, which may limit your ability to pursue small claims against them: https://www.facebook.com/legal/commercial_terms/update
> Each party will be responsible for paying any AAA filing, administrative and arbitrator fees in accordance with AAA Rules, except that we will pay for your filing, administrative, and arbitrator fees if your Commercial Claim for damages does not exceed $75,000 and is non-frivolous (as measured by the standards set forth in Federal Rule of Civil Procedure 11(b))