Hi , So I contacted a company to write a dissertation for me and they quoted my 4 quotes after the final quote we both agreed and the initial agreement was that I will deposit £50 and £100 the next day to initiate the work.

But this was just done on a piece of form and not even any signed deal or anything and most of the conversation happened on Whatsapp. Within an hour or two, I changed my mind to do my work on my own and was unsatisfied with the company as it seemed dodgy and asked for a refund. The company started acting weird and blackmailing me to pay the full amount.

Now they sent me an email saying they will sue me for defamation and company breach when I didn't even do anything. I even texted them the next day to ask for a refund and they kept saying I am backing off from the deal and that they will talk to the academic misconduct department and that I am a fraud and what not.

I did not even use their service and in fact, cancelled it within an hour and now they re saying they will approach my uni and revoked my degree. What should I do