My credit card statement shows an extra deposit i never made (UB)

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I made a deposit at UB using my credit card on 3-5 for $600. I then made another deposit on 3-7 using the same credit card for $600, as $600 is the max deposit for some reason. SO that is a total of two deposits for $1200 total. Even my transaction history at UB confirms this. So, I just opened my credit card statement and noticed 3 deposits of $600 each for a total of $1800. The credit card shows 2 deposits were made on 3-7 instead of one. I do remember there being a few problems with that deposit and it toook a few attempts for it to go through with UB's cashier. I just emailed UB. Does anyone have a ph # or a better option for me? should i call my credit card company yet? or wait to hear from UB? Tks.