This is getting ridiculous with my pulse.

So I recently started donating at CSL for the new donor bonus and I donated 4 times without an issue. Now suddenly I'm on my last $100 donation and I suddenly can't pass my screening due to my pulse being too high and have been deferred 3 times in a row. I've tried just about everything I can think. I don't smoke, drink, do drugs, or anything like that. I've been drinking plenty of water, tried eating a bunch of potassium enriched foods, etc. I've been donating plasma pretty consistently for years and I've occasionally been deferred for high pulse but it was just the occasional one off. I almost think they just don't want to pay me that last $100 but that's ridiculous, right?

I don't know. It's just so depressing.