Billdesk — regarding link failure while paying fee online

Address:

Avas Vikas Roorkee, Haridwar, Uttarakhand, 247667

Sir,
Today i was paying fee to kendriya vidyalaya 1 roorkee online then billdesk provide a link and options for payments. I select bhim upi then a request appeared at my bhim app then i make a transaction of rs. 1800/- then i check the billdesk link that was showing busy in processing. Then i wait for some time but it was consuming so much time. Then i cancel it. Then i go back to school fee payment window that confirm that fee was not paid.
My net was slow that may be the reason that on line payment not done properly. Now send my fee amount rs. 1800/- back to my account.