No form of contact

I requested an Uber Trip on 26 April 2025 and selected to pay for my trip with my Tymebank card. I had to cancel the trip and the pre-authorisation hold was not released/ my money was not refunded to my account. I have contacted Uber and they have assured me that they have voided the transaction and that the hold is on the bank's end. I have tried contacting Tymebank on all of their contact numbers with no success.