Lenovo — Renewed Lenovo ThinkPad X1 carbon 14 inch thin laptop

I ordered a Lenovo's laptop from amazon on 1st march 2021 and got a defective laptop's charger cable then replaced it and I got an another laptop. i was using the laptop but after some months keys of the laptop weren't working then i went to Lenovo's service center they said your keyboard had changed and they gave a quote of rupees 19, 870on 6th august 2021 . and it was 10 times higher cost .at that time i gave the laptop after inspection they said your laptops motherboard got short-circuit . how it was possible while i gave on working condition . at last they said if you want to repair it you have to spend around rupees 40, 000 - 50, 000 . then i denied to repair that laptop now i want to to refund my laptop's price

laptop's serial no. R90KMCZC