Samsung service to clients is non -existent. Shocking for a Corporate Company like Samsung.

I took out a new contract in Sept 2019 and received a Samsung note 9 phone. In Dec 2019, this phone was doing 3 things namely: 1) when your phone rings,screen does not light up,so you don't know who is calling you. 2) While chatting to the person ,it cuts off without anyone hanging up, 3) phone switches off on it's own and cannot put it on and takes more than 10 attempts to switch on. I took it to We Fix as they are one of the authorized Companies that handles /fixes Samsung phones. They took a week to fix and then went to fetch my handset, according to them they reloaded the software. I gave my sim to them and they inserted it. I asked them to call my phone from their landline which they did, the phone did not light up, does not show who is calling. before taking the phone. When you have it on speaker and want to take it out of speaker mode, it does not. Needless to say that they asked me to re-book the phone and they said that they will request Samsung to get send a new motherboard. Samsung agreed and this was done 2 weeks later. Bearing in mind I am still paying my monthly installments for a device which I don't have. I collected the phone end Dec 2019. End January, the phone was doing the same thing, screen does not light up, phone switches off. I took the phone back to WE fix in Canal Walk and booked it in on 7th Feb 2020. I told them that I don't want this device and they need to replace the phone. They logged a call with Samsung as they need to make that decision. Today is the 27th Feb and Samsung still did not approve the replacement. I wrote numerous e-mails and made over 15 phone calls to Samsung H/O and all they make is empty promises.They never come back to you. Shocking service, It seems like clients are not important to them. They made the sale and forgot about the warranty. I even wrote to one of their Director and needless to say that no response from her. will take the next steps if I don't get a new device by Monday.