phenomhealth NO MaX SHRED, TEST X CORE Would not cancel. Gave incorrect return instructions Denver Internet CO

Ordeded NO MAX SHRED for $5.95, They called next day to confirm credit card # and said they couldnt use it because it was a Debit card. So I told them to cancel the order.  Next day they bill me $2.95  For an order of TEST X CORE  which I did not order.  Tried calling 1-855-660-1956 to cancel both. No clear English speaking help. Said both had to be returned seperatly  with seperate return RMA #s. Days later both items arrived in custom fitted box together. Still unsure how to return without being charged fo one or the other or both