Based on this story they clearly just didn't want to pay commission to you anymore and were trying to find any reason not to pay you anymore. Granted you made a really stupid mistake - providing them with fake kyc documents for some reason (even though asking for kyc 2 years later for such a established account with ton of referrals, cmon). If the kyc part wasn't the case I would totally sue them for that. Kyc or not, they don't honor the referral program and don't the deserve the business you brought them at all.