Lazada complaint: Poor customer service, no results, being scammed

I purchased a mobile phone when I received the mobile it wasn’t the item I purchased nor did it work it’s faulty, we decided to contact the seller they said they would send another mobile to replace the incorrect Mobile they sent and to send the other mobile back once we received the replacement.
We waited but the mobile never arrived, we contacted the seller they kept on saying wait, well again after a while we asked the seller proof of dispatch which they couldn’t supply and are not talking anymore to us, by that time of course the 7 day return policy has lapsed.

I have contacted customer care 2 times explaining the issue and that the seller is scammer by not supplying what they promised and that they are still trading both times customer support just say we can’t send back the mobile because it’s passed the 7 day return policy of which I have already explained that to them, Lazada need to stop the supplier trading with them and also do something about me being scammed.

CS Call Summary | Damaged Item received | Order no 643952033388191 | Case no 2500000114493524, Order concern | Order Number 643952033388191 or Case Number 2500000113438913