Device not working as it should😡😡🤬

So I got a phone from blue label and it's an HTC wildfire e6 plus. I received the device on Monday and got to set it up well on Tuesday and the device was not perfect it was slow and not working properly the apps on the phone arw slow the speaker is very low for calls and tee phone speak is like an echo and I did not like that and I called to cancel yesterday which is Wednesday 23rd of July mind you I only have the phone for like 2 days.

And you are telling me I have to pay cancelation fees I will not do that you the one who sent me a faulty device which I am not willing to do an exchange for how the hell do you say I must download the software on a brand new device how like how. You can go to any other phone company even if you buy the phone cash you have 7.days to return the device if you don't like it or wish to cancel.. Who are you to charge me cancelation charges I will not pay a single sent as I am supposed to have a cooling off period and I asked you to cancel my debit order with you since I want to cancel the device and if you take money from my account you will know me very well and I have all the names of the people I had spoken to and my calls with you have been recorded and I will be taking you to the ombudsman you people are a **** and you think you are smart I shouldn't have trusted you. I want this phone picked up as the 29th is far why will it be picked up o the 29th when I called on the 23rd that's a trap on its own so please do not start with me honestly. I will sue you if I habe to don't play games with me