Non-Functional Customer Care Weblinks

I recently reported a frustrating interaction with customer services around an overcharge for a recent AirFrance Trip. I received a response to my complaint but was yet again directed to the AirFrance/KLM weblink to respond to the email. <br> <br> I have tried multiple times to reply or lodge my issue on both the KLM and AirFrance Customer contact centre website links but both throw up an error after one has completed the rather tedious forms. I thought this was an issue with my tablet but have tried a week later on my pc and receive the same errors. No-one is however able to respond and provide me with an alternative way to email or send through my message.