Cavalier Crystal Mistake - Looking for Help

After earning the Cavalier title I was excited to go buy and try out the new cavalier crystals to see if I could get a chance at a 6*. I went to the crystals and found the grandmaster crystal titled “Cavalier”. I chose to purchase 10 of them at the cost of 1750 Units that I had saved. After spinning one and noticing there were no 6* in the real, I checked the drop rates and found that I had made a terrible mistake and that there was a Cavalier option below that awarded the 6*. Shortly after I purchased a unit deal for 850 units and spun 5 actual “Cavalier” crystals. While I completely understand that it is my fault, I was hoping to see if I could get a refund for the 1750 that was spent on the incorrect crystals and have the champs awarded from those reversed. Likely the response will be “all sales are final” which I expect, but I’m so upset with all the work that was put in to just see all the units go to waste. Please help me if possible.

Thank you.