Thank you for your question.
Under the UK, this would fall under the Consumer Contract Regulations.
You would have a right to cancel within 14 days and obtain a full refund provided that the service had not been provided. I think the issue you have is that it seems you may have signed in a company name which would mean that you would not have the same rights as individual consumers.
I hope this answers your question. If so, kindly rate the answer and provide feedback.
If you have any further questions, please do not hesitate to ask.