need advice Double Result

Had reverse forecast where 1st and 2nd reversed in ireland . A bookmaker who offers double result is telling me that a reverse forecast is one bet and an amended result reversing 1st and 2nd doesn't entitle me to get paid twice.

I explained that an yankee is 11 bets packaged as 1 and a reverse forecast is 2 bets packaged for convenience as 1.

If i had done two forecasts separetely a to bt b and then b to bt a, i would have been paid twice.

Any advice?

Tony