Phone screen flickering

i received my phone from Mr P on the 12/04 and noticed that afternoon the screen was flickering but didnt take to much note of it by wednesday it was continuing to flicker and showed collegues and family and they said that its not right for a phone to do that so i contact them and was advised that the phone will be collected and test and once they have tested they will let me knw if im getting a new phone and asked them if i will be getting aother phone in the meantime which they advised no. <br> <br> By thursday the phone hadnt been collected so i phoned and was told that my phone will only be collected on the 18th April which i am still waiting and also sent an email and didnt get a response as i am wanting a new phone now as i cant wait still 2 weeks for them to decide what is faulty. <br> <br> im not calling them again as you just get told we will collect it and let you know what is happening but no one has come back to me to replace phone and take this phone back <br> <br> Im putting a stop order on my account today if i dont get a new phone delivered to me as i have 7 days to return the phone and tey have delayed from there side getting a courier to collect phone <br> <br> this is terrible service