ATT referral program reward not received

I have referred two of my friends under ATT referral prgram which states that they will give $50 for internet service and $25 for any service referral. My ATT referral account shows my frineds refferal entries stil they claim that they are not referred, the referral code is not used, they registered after taking the service etc and different reasons just without paying any amount.

Till now I cant understand how the entries gets added to my account if I haven't received them and most worst situtation is I have ordered for services for my frineds using my referral code in ATT website and they state that I have not used referral code which is shock to me.