I'm having the same problem. I'm at 224,000+ MQMs and I'm still waiting for my 25k threshold awards for 125k, 150k, 175k, 200k and 225k thresholds (I did get the 25k at 100k MQMs roughly 6 months ago).

I never received any email reminder to claim the awards, but was fortunately reminded after reading about it on FT two weeks ago. I promptly emailed via the website twice and called the Medallion Desk last week--but to no avail so far. The agent simply said they were having issues with their system and that I should be receiving the awards shortly. I'll call in again later this week and see what the deal is. Keep me posted on your end.