How are so many Filipinos with A1 (and even lower) level English getting hired at call centers?

I'm a native English speaker and at my job, I need to speak with Filipinos everyday. It's always hit or miss. Half of the calls, I get a Filipino I can understand and it's fine. But the other half? I can still understand them, but I have to REALLY focus on what they're saying. I have to constantly ask them to repeat themselves or speak slowly. I use a captions app on my PC to keep track of everything being said and the only times the captions give me weird text, is when I'm dealing with a Filipino with bad English. It's obvious that some of these call centers reps have A1 level English or worse.

How are these companies getting away with this? Is human resources just trying to fill a hiring quota and does that mean these people will eventually be let go, or what?