I tried to contact them by phone and email for wee...

I tried to contact them by phone and email for weeks on end and no one answers. I have an invoice on which the goods advance is written and that's it, it doesn't write anything about the product, brand, code, etc. I hope I don't end up having warranty problems because the documents I received are cabbage.
Please give me a contact where someone answers and I come back with a 5 star review.