Actually, i'm also doubting if you were deposited that amount since you were claimed their promotion too (Unless you are showing us the TX)
Want to claim only for 0.001 btc, while you already have 1.4 btc? Doesn't make sense.
Why doesn't it make any sense? One may have 1.4 BTC but it doesn't mean that they wouldn't like to earn $1.50 with minor effort. Say you have $2100 in your bank account, and you're given the opportunity to get $1.50 for free. Are you telling me that you wouldn't take up that opportunity? Doesn't make sense.
You should take every opportunity to scrape some extra funds unless it harms you - better off that way.
Might not have been deposited via Telegram, or it may not have been the original amount.