Uber charges for trips that didn’t take place - Refund demand

I called Uber services for an Uber van to pick me up on 11 April 2020 in the morning (within the permitted covid-19 traveling times). I requested the first trip and a nearby driver was being located, after the authorization hold of monies was deducted from my account, however the driver never appeared therefore the trip never took place. I requested other 2 trips only for the same issue to occur. I have incurred 3 different charges for not even a single trip that occurred.

I have been following with Uber via the App, under the ‘help’ section, by means of a chat conversation with different Uber representatives however I am keep being told about an authorization hold which is meant to ensure that there are funds in my bank account - fair enough...however the funds eventually moved from a pending status i.e. authorization hold to a successfully transaction that went off of my account.

My last message to Uber was to ask them to acknowledge my messages and evidence of the transactions and I have not received any form of acknowledgement whatsoever. I demand my refund!