Unable to fix Huawei P30lite that is still under warranty

There has been an error on my Huawei P30 lite 2020. Whenever recording a normal video or sending a voice note on Whatsapp, the sound breaks up. I have drove to Huawei Menlyn more than 5 times, and every time they thought it was fixed and then I had to return the phone with the same error. This has taken a lot of my hours and petrol and the problem hasn't been fixed. This is unacceptable as they can't seem to fix the phone which is still under warranty. It has been more than a month of follow ups and now there is no stock on the main board which needs to be replaced at no point I have been offered a replacement phone and this is my only phone.