On XX/XX/XXXX i opened up a checking and money market accts@Citibank.I was assured that both accts would be tied together to eliminate any service charges to my checking acct.XX/XX/XXXX i went to my bank and found out a $ XXXX/mo service was in fact being charged to my checking acct.I phoned customer service @ XXXX and spoke to a supervisor named XXXX, who informed me that no service fee was charged to my checking from XX/XX/XXXX until XX/XX/XXXX.On XX/XX/XXXX a ( Sweep ) was performed to my checking acct which somehow activated a {$30.00} service charge to my checking.XXXX informed me that a {$630.00} credit would be applied to my checking.XX/XX/XXXX to XX/XX/XXXX. 
