CBDLAB Charged my cc four times for $79.95 ($320.00 total) for two $4.99 samples that I ordered via Amazon Kent Washington

After buying several items on Amazon, a survey request popped up on my computer telling me that upon filling in the survey I was entitled to a very reduced in price item. There were five choices with two no longer available, so I decided on the hemp oil (two bottles - one for sleep and the other for pain. I received them shortly after ordering and tried the sleep drops which kept me up all night. They were obviously a sham so I threw the two bottles away. Two weeks later hey sent me two additional bottles which I still have, unopened. Today, while researching this particular hemp oil herbal drops, I came across another "rip-off" complaint. I immediately checked my cc history and noticed the four charges. When calling the telephones ne number associated with the charge, I was told that I needed to return the product within two weeks in order to not be charged the $79.95 costs. They further said that becaus I didn't return the two bottles within the two week period, I automatically received two more bottles since I was on their customer list. This is a total sham, rip-off, insult on injury. I deserve a refund for all but thanks he two amounts of $4.99 which was charged to cover shipping. Any suggestions on where to go from here?