TenorShare review: Multiple charges for one service

On 08-16 I purchased the UltData with a 7 day trial, which goes into a one month subscription. Price listed was $40.34.
On 08-23 I was charged $45.96 for another month. I contacted customer service and they are stating I purchased 2 products, second one being Tenorshare 4 DDIG. I assured them I had only purchased 1 product. We are going in circles not, them stating their no refund policy stands. Whether or not this was an accidental purchase, I have asked them to refund me for the second product. No help thus far.