UNABLE TO RESOLVE REFUND QUERY

I HAVE BEEN TRYING TO OBTAIN A REFUND SINCE JANUARY 2015 FOR THE PREVIOUS TAX YEAR (2014). NO ONE AT THE CALL CENTRE CAN PROVIDE ME WITH ANY EXPLANATION, OR PROVIDE AN ALTERATIVE PROCESS TO FOLLOW OTHER THAN THEIR INTERNAL 'ESCALATION' WHICH IS NEVER ACTED UPON.<br> <br> I FREQUENTLY TRY TO CALL SEVERAL TIMES EACH MONTH BUT GET NO FURTHER IN RESOLVING THIS. <br> <br> CURRENTLY THEIR ELECTRONIC QUEUE CUTS OFF THE CALL DESPITE TRYING REPEADEDLY. <br> <br> THIS IS A SHOCKING SERVICE - IT USED TO BE SO EFFICIENT BUT NOT ANYMORE APPARENTLY