2024 November they raise my bill by 3x and never let me know

Their India customer service is more like a scam call center they don't try to help u they are always trying to sell u something and make it sound free when its not when I say I'm not interested they end the chat on me and i get connected to another scam agent the only time i had a good experience with customer service is when i was on a call with an american agent which was 2 years ago they raise my price 3x from 30 to 90 because the deal they gave me ended why they didn't inform me because they want to take as much money from u as possible been a customer for 5 years but they dont give two [Edited: "Language"] as soon as my contract ends which is 2 months I'm leaving