I sent my Huawei Mate 20 pro, they took a week to ...

I sent my Huawei Mate 20 pro, they took a week to send me the invoice. The staff is rude and they don't have any knowledge about what they are talking about! At the End they charge my credit card 4 times and still I'm in the process of getting my money back!!!! Ask Huawei to change your repair centre! This company is a scam!