HotelStay cold-calling lies about our sports organization endorsing the call to members

I am the secretary for a Sports Federation in South Africa. Our members have complained about being cold called by marketers on behalf of Hotelstay.com. The callers make the statement that they are calling to offer members a good deal and that our Sports federation has endorsed their product.

This has raised concerns that our member data base has been compromised. I called Christo Botes ********** ********** 488 and raised my concern.

After being put through to his supervisor/colleague, I was explained that they are working of referrals and not our database. This seems very suspicious as they are sending emails and direct calling indicating that they have the Name, Contact number and Email address of our members.

How do we get Hotelstay to clarify the practice and to retract all calls and delete or referrals for our organization. If it was one of our members that has shared the data I need to investigate who have distributed the information. If they are indeed working on referral calls, they must state to the caller who has done the referral.