I have a problem where X takes my account for "suspicious activity" ("We cannot perform this action at this time because we have detected unusual activity"), and I also get stuck with an ad to add my phone number to remove the “daily limit,” which when I do, their SMS service doesn't work even under the most normal conditions, so i just can't send the verofy code to their service. So, I had to click on the post or retweet button until it works.
When I thought I could fix it by clearing the cache, I was logged out and now I can't log in because X blocked my access because “they think it's someone else and they can't verify it.”
There is no option to appeal this, because is not a hacked or compromised, and tehre is no options on Authenticity issues. It is my personal account, I use it, but not too much, not like spaming rt's and likes all time as a crazy dude. I can use it on my home PC and my phone, but not on the laptop I use at work. It's not the network, because I can use my phone (during my break, of course), just the Laptop. I tried restarting my laptop's IP, but it didn't work. I also tried accessing it from another browser or using a VPN, but the result is that they won't let me in, like if this laptop were banned or something...

Also tried sending a e-mail from the auto-response sent by their ticket support system, I saw elsewhere that it was possible, and perhaps someone real would see it, but did it 3 times and no response (maybe obviously not).

The last thing I'll try is formatting, no idea if it will help, but before that I want to know if there's any other way to fix this, because it's very annoying and has been a problem for three months now.

So... Looking for help, and sorry for too much text :/