Rude Facebook page admin/social pg manager

I received a pop-up survey on their Facebook page on Tuesday I sent a DM enquiring about the coupon, they didn't respond until I commented on one of their posts today. They said they cannot escalate the matter. They sent me a texts saying auditors checked and my number was not there and then they instantly blocked me on their Facebook page I'm disappointed is this how you treat your customers cause I do shop online and in store for futurelife