BDO possible scam or OA lang?

I have a BDO Visa Gold na mga 1yr na nasakin. Then July 6 i got offered ng BDO Mastercard and i agreed. I got the card mga 1 week ago and hindi ko pa sya inaactivate kasi busy.

Then an agent called me earlier asking if natanggap ko na yung Mastercard, kung naactivate ko na ba daw and kung may offer na saakin for NAFF. Sabi ko hindi ko marecall if namention. He MENTIONED the last 4 digits of my card and i confirmed. Hindi ko binigay ha. Then sabi i need to spend ₱3k lang from July 23- aug 23 to be eligible sa NAFF.

He proceeded to ask kung may iba akong cards under BDO. I said yes, BDO Visa. He asked for the last 4 digits para daw maprocess for NAFF, hindi ko binigay sabi ko naiwan ko wallet ko. Ako na lang kako mag process ng NAFF if i wanted to.

Scammer ba to? Or true ba yung ₱3k lang NAFF? Parang ang baba naman kinakabahan ako if scammer kasi hindi ko talaga iaactivate yung mastercard kung scam