Charged double for the same trip

Debited twice by Uber. I had a trip with Uber and they debited me after accepting my trip, the following day they debited my account again and I was told that “ If you see an amount of on your bank statement, this is just an authorisation hold for your recent trip request. It’s already been voided and you won’t be charged. No further action is needed. Authorisation holds are added to your account while we confirm that your payment method is valid. It is quickly voided, but it may take a 3-5 business days for the bank to release the hold” I waited for more than 5 days to get my refund of the first amount till do date I haven’t received it, I then emailed them guess what they rep**** with the same respond. I am so disappointed on the poor service I received and I am in disbelief. I want my money this is unacceptable and also why isn’t there a number that we can call cause the help support is not effective.