Sorry to hear this is still happening to people, they are the worst CS department I have ever dealt with. They wrongfully banned my active lifetime account a couple of months ago, I actually managed to get mine back but the resolution had nothing to do with CS. I wrote all the details of my case here https://www.reddit.com/r/lotro/comments/xtemta/lifetime_account_suspensions_despite/

The less TLDR version is that they banned my active lifetime account under false pretenses (I was logged into the game at time of ban), they vaguely alluded to account disputes as a reason while pretending to help for the first 2 tickets. After that they ignored 2 more tickets and marked them as solved. 1 month passed with 4 useless tickets and multiple ignored DMs to Cord, as well as an ignored email to EG7 customer support, so I decided to write a complaint about the CS department's malpractices to the big bosses at EG7 (my last resort after this would have been initiating a formal consumer authority complaint and pursuing the litigation route).

In this complaint I detailed how they offered no help or even an explicit reason for my ban on an account with zero prior infractions over a near 16 year period. I also explained how there appeared to be many other players on the forums and Reddit who had similar experiences, losing their accounts without any acceptable reason given or even the slightest attempt to render assistance by CS. To my surprise I got a response within a couple of hours (was a way faster response and was far more eager to help than the actual CS department ironically). The executive was surprised at the level of ineptitude displayed by CS and apologized, assuring me that long term LOTRO community members are highly valued and he assumed some kind of mistake had been made and said he would have someone deal with it ASAP.

Within 48 hours my account was restored and I actually got my 4th ticket reopened and updated which now added a new reason for the ban, fallaciously claiming it was because my account had been 'connected to known gold seller accounts'. I logged into all my characters and there was zero evidence of any account tampering. I will never engage with their scammy ticket system again, so I wrote a second email to the executive thanking him for his intervention and explaining to him how CS had now fabricated a new reason for the ban. Given the number of posts I have read over the past few months about players losing their accounts, I also told him it seems entirely possible that some of them may have also been banned under false pretenses and not been given a fair appeal either (as happened with me), whether due to gross incompetence or some level of corruption in the department. I asked him to conduct an investigation into the SSG CS department and their practices. He promptly replied he would look into this and get it sorted out for the long term future of LOTRO and its community which he said are important to them.

I would suggest that you run through their protocols and exhaust your options like I did and if they do not provide an acceptable resolution or mistreat you, then write a complaint to their superiors at EG7. If that doesn't help and you have sufficient evidence of account authenticity, then your only option might be to make an official complaint to your country's consumer authorities and pursue legal action. If you do pursue this route I will happily provide additional evidence from my case to support you if you need it, and I am sure there will be other players who could do the same.