Don't want to refund my money back

I have been using uber for more then 2/3 years their services was amazing at first but now it seems like they are ****ming people on the 9th of March I requested for a package to be retrieved unfortunately no cars we're available and the money already went out of my account no reversal and no refund, the 11th of March while struggling to get a ride i request the driver accepts then he cancels the money goes out of ur account but never reverses back I figured maybe it will reverse later so I requested about 3 more times same thing happened I couldn't find a driver or they accept then cancel.. all 3 amounts was for R91,15 none of these amounts reversed back into my account till this day I can see on the uber app they are still under unrecognizable charges.. i eventually got someone and R108 deducted for that trip the same night uber deducted R128 from my bank account at midnight I was already asleep and saw the morning.. I ofc queried with them and was told stuff that really doesn't make sense I was told the pre authorization hold are used to verify ur payment methods then reversed immediately now unfortunately no reversals was ever made I tried to explain and uber responded that they won't respond to me anymore there's nothing they can do but they ****** me of over R300 that left my bank account and on the app it says I still need to pay, please be careful with uber I also queried them about the incorrect amounts on their receipts it does not correspond to the amounts that goes off on ur account the responses u get from the agents it sounds more like they themselves dunno whats going on ..something don't add up with this service anymore iv lost all trust.