Is the TV shopping of Yiganghui Life true? Who has consumed it? Let's say thank you.

Informal enterprises. I was cheated and bought something. As soon as I saw that the quality of the arrival was worse than that of the stall, I immediately returned it. After negotiation, the seller's postage will be borne by me. After deducting the postage in 29 yuan, the original package of 398 yuan can be returned to me, with a promise of seven working days. It's been more than a month now, and I've made countless calls, but I still don't get a refund. So don't believe it.