Just got of phone with citi bank. They said they can dispute the charges but will only give prorated refund on the amount. The dispute agent was well aware of Sunrocket and said they might be able to recover the prorated funds from the liquidating agency or whatever. According to him, there is no way they can recover funds before July.
The way sunrocket account was set up was pay for the first year and the second year is free. Technically they can argue that the second year was complimentary so there is no value to the claim and they might not refund the amount at all.