Oxford Publication — I am complaining about the registration fee for the job

I paid 750 rs for the handwriting job on March 2nd, thru UPI but I didn't want project.I contacted at the given numbers and email ID many times, but they don't respond.I wAnt my money back, I have sent the message to them, but nobody is responding. Till now I have not received any fruitful information about the courier or the project.Through this I am sending the message again that I want them to refund the amount as soon as possible.For contacting me I am giving my email ID below.
Mamta Sharma
mmta.[protected]@gmail.com