********* *****ulent charges by Uber

I had a promo for Uber one 4 weeks for free I accepted put my card details and came up as error with card. I tried again still the same error. I was charged not once but 4 times by Uber 4 small amounts. And I still wasn't given the free Uber one promo. I contacted Uber was asked to provide proof of transactions and proof of promo offered.. which I did all Uber did was reverse r7.30cents. Yet they took off r32 of my account in 4 small transactions. Be very wary of this if they *****ing small amounts and doing this often it will amount to bigger amounts. And all Uber did was tell me that I have submitted this query before and they closing it.No acknowledgment of the proof which was asked and I submitted they just closed it without even giving me a refund. Pathetic service and so *********.