Weekly ticket Heuston H/Hatch

[Emma]

Hi,

Not sure if this question is ever asked before, if so sorry!

I bought a weekly ticket from Heuston to H/Hatch from one of the ticket machines in Heuston. The ticket reads: Adult 7 day rail and it cost EUR 17.40.

The man checking the tickets this evening said I couldn't travel on it as I had already used the outward journey nad return journey once?? He thought it was one of those 7 day tickets that you can only travel out once and back once. No matter how I tried to explain it, he made me buy a single.

Am I wrong here now? I thought I bought a ticket which is valid from last Monday to next Sunday between Heuston and H/Hatch and I can travel on it every day. Sure why would I buy a 7 day return of EUR 17.40, when a single is only EUR 2.10?????