Deduct money for no reason and the customer service is bad

I’ve hold the positions of UK oil for several months. I realized that the deducted fee is more than that it should have been deducted. I reported this issue to the customer service but they didn’t help me handle it. And they just shrink the responsibility. I don’t like judging others at random, but I want you to avoid being cheated. The attached photo is the evidence that I assembled. The last photo is a screenshot about the actual deduction. This position should have been deducted $110 but in fact the broker deducted double. This is just part of my accounts and I have many accounts, deducted nearly $2,000.