[DontUseAirTransat]

We booked a one-month trip to London. We then added a car-hire deal through them with Hertz. We subsequently decided to stay the last week in London and not use the car. Hertz tell us that it would have been no problem to adjust the contract if we had booked with them direct, but AirTransat has the money and they are powerless. AT refused several times over to make what is a click-of-a-keyboard change in the contract. I have spoken to escalating levels of seniority, following up with e-mails and now they are not replying. All the responses I got were the same: "The Contract can't be changed." I have repeatedly pointed out that they are not in the carhire business, and they run the risk of alienating customers from flying again with them ever. I guess their hard-nosed attitude typifies the organization and, accordingly, if anyone asks my advice it will be never to use them. Heaven help anyone who wants to change a flight contract!
I would like to start a Small Claims action for them "Penalizing" us when they should address the issue through "Liquidated Damages", which, in the circumstances, should be Nil except for a modest admin. fee for clicking on a keyboard for 1 minute. Any advice please? I live in B.C. and I presume AT has to register to do business here.