ADT Security Services Marty (salesman) who called me via phone swindled me out of $120.00 Aurora Colorado

I purchased an ADT Security System from Marty over the phone, after he offered me a $120.00 refund for two months of free service. He said ADT would mail me the rebate. After several weeks of not receiving it, I contacted Marty on Nov. 22 at 9:06 AM. He said, quote, "I will get it to you." I did not get it, so I called him again on these dates: Dec. 1 @ 2:38 PM; Dec.6 @ 3:14 PM, and today, Dec 11 @ 9:26 AM. Each time he said he would call and check on it. He said he didn't know what the problem was. Today I told him to give me the number of whomever he was calling (951 892 7402). I called and the rep said I should have received a rebate certificate via email. I DID NOT RECEIVE THIS FORM. She said it may be in my spam folder. It is not. She also said it takes 8 to 12 weeks to get refund. Marty did not tell me that. I told her to send me the form today. She did via email. I received it without any problem. It explicitly states that you must return the form within 30 days of installation date, which was October 25, 2017. I have now just discovered that I have been swindled out of $120.00 because the 30 days have already past.