I qualify for a loyalty system but its not given

My name is Dion Gumede I've been hiring cars from woodford company for quite some time now few months back I filled out a \loyalty"form so I can get discounts I was told in order to qualify I need to hire a vehicle on six occasions which I have done but nothing has materialised from this I've spoken to the staff in branch but they have told me its their headoffice that is not doing their job I've also sent e mails to get assistance but no one is willing to assist me I'm really frustrated because everyone I've spoken to keeps blaming the next person and woodford car hire info e mail is being ignored I've sent e mails to their info e mail that is on their website but no one responds """