Vodafone Dongle Fees from before 2016 - are they reclaimable?

Chazza10

I asked for the dongle that I thought was free to be cancelled, but it wasn't. The whole thing started in 2013 and finally cancelled properly (I think) in 2018. I have the link to my bills at the time, but as it was a long time ago, the older ones are no longer accessable.

I've just spent quite a long time on the phone to Vodafone complaints (couldn't find an email address) and the lady was adamant the fees were too old to reclaim.

Is she correct? Should I give up and put it down to experience, or is there a way of reclaiming them? (Its hundreds of pounds)

Thanks.