In fairness to agents and counter staff, we have discussed in here before the problem that staff are not given the power to right wrongs. In previous decades, staff had the authority to issue vouchers or whatever. After the financial recession of 1990/92 the accountants took over and cut all that away.
Therefore, fobbing us off is all they can do. Not least as we now demand more and the big problem that many pax do not understand the Ts&Cs of LCCs. So it is a horrible twist of factors.