I bought tickets for Doek and Jean events which was scheduled for the 30th November 2024,they postponed the event and even requested the the refund,I received refund but not in full,I keep On sending emails they send me back and forth,How can obe be assis

I bought tickets for Doek and Jean events which was scheduled for the 30th November 2024,they postponed the event and even requested the the refund,I received refund but not in full,I keep On sending emails they send me back and forth,How can obe be assisted,they insist I talk to the bank check the remaining refund,