Harrison Autographs review: Fake COA's being provided to customers

Purchased 3 items back in 2018 off various Ebay sellers (probably unwitting victims themselves), all came back as being fake very recently, and I see others are complaining of the same thing. Looking for a full refund. Items are as follows:

HA3798RMD

HA710PSG

HA4761BRC

Transaction ID's for Receipts are as follows (using Paypal)

27M34313C3894793M-$95 for HA3798RMD on Aug 18, 2018

5V7272122C7082736-$65 for HA710PSG on Aug 14, 2018

9DT57398XT6145013-$105 for HA4761BRC on Dec 18, 2018