SQC J O CA

I had two charges coming out of CA in November on my card. One being from SQCSelina Martinez, the other from SQCWeston Medley. I DId not use my card for these, so reported them to my bank and bank reported it as fraud and I got my money refunded. One was for $97 and one was for $98, both done on the same day. After bank had refunded my money, the people who had charged these refunded my money! Ok, so today (this is in December) I went to the store and my card was declined. I come home and go online to find another charge from SQC*Selina Martinez for $97!!!!! This made my account balance go into the negative and I had ordered Christmas items online from Walmart that I do not know now if that will go through. What a mess! The bank had issued me a new card for security reasons and I destroyed the first card. Somehow this charge today was made on my NEW card that I haven't used to purchase anything online except Walmart. I am baffled and very upset. I cannot get a new card EVERY MONTH just so they don't have my card number!!!! What does a person do to stop these people when you have no idea who they are or how they are getting your card info? There has never been a phone # on any of these transactions, so I cannot contact anyone. Phone numbers would probably be fake anyway.