can you request your original mortgage loan company to buy back your loan if they sold it to another mortgage?

my original mortgage loan company sold a part of my loan to another company that other people are experiencing trouble with; american servicing company. i don’t want my loan with them. what can i do?
thx for the answers. i’m picking this answer as the best b/c he told me 2 things to do. thx so much to everyone.

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