What's the worst thing that could happen if i owe more than 10k to a mexican bank but i live in the USA?

10 years ago i got a load of 90k "Pesos" more or less like 9k dollars in banorte in mexico but i move to the USA and i have been paying 2k "Pesos" 200 dollars per month but the interest got so high that right now i owe more than 140k "Pesos" to the same mexican bank is like the paying that i have been doing didn't count...so i was wondering what's the worst thing they can do if i don't pay them that amount or if i stop paying them?