EarBud Repairs- Returned needing further repairs!

I dropped my earbuds off for repair on Monday 23/11/2020, I collected them today the 26/11/2020. The right ear bud was not charging or connecting, after getting the pair back today, somehow the left ear bud is now only charging to 80%, has poor sound quality and is completely drained with 5 minutes or both buds magically disconnect. How is it possible something is repaired and "quality" tested only to return worse than when it was sent in?? This is the worst repair job I have ever experience, fast speedy repairs where your item needs repair again with further issues! I don't want another useless repair under warranty, I want a replacement!