Al Ahli Driving Centre — customer service & money looting

I tried to open the file I think from may 28 till now file not get open for LMV. Before 3 years I got motorbike license from Al Ahli driving center at that time customer service it's ok,
now I experienced very very bad customer service when ever I calling marketing department always busy if they answered they keep say I will call you over and over enough of hearing. Hence it's took too long and didn't get file open due to that reason I request refund on yesterday they said very rudely NOO REFUNDS!!! The Customer service supervisor Whel don't know how to treat the customer and doesn't have sense. Specially need fire this Whel from the company My worst nightmare and today they said will give refund but we will charge 420AED without doing anything just stealing my hardly earned money.
They don't have any terms and condition according to this these all are hidden terms.
Be careful these are your hardly earned money.