Dissatisfied customer experience

I contacted I Uber on the January tell them that someone had made purchases on my account while I was at work. I immediately signed into my account and tried to remove my card I wasn't able to.remove it because I Uber wants you to have a card on the system despite the fact that my account had been hacked. I called them to tell them what was happening and they told me I had to fill out a form and would be emailed back. I did that and went to my bank to cancel the card. I sent me an email saying the transactions hadn't gone through and that my bank was holding the funds. I went back to the bank and they told me that wasn't case. I communicated this with uber and they asked me to verify the card information for the card that was deactivated. I did this. I haven't gotten a response since. I sent another email asking if I was still being assisted but I haven't gotten any response. I'm very disappointed in the lack of customer service.