Revibe is warranty is a ****

I bought my little sister an iPhone 12 cash(excellent condition), 2/3 weeks of her using it, it started glitching on the screen booked it for a warranty return and they say claim that the phone is fine now they want us to almost 2000 in shipping fees within 7 days which ridiculous where is one supposed to get the amount of money in such a limited time, and if we don't pay they claim that they will dispose it as abandoned. I mean like who would throw 7k just like that. They are probably intending to resell it to someone else in the same condition they are a huge **** to think that I even considered buying myself a phone from them too.