you got checked-in?

wahlau...what a coincidence when u checked in the hotel and the hotel found out you already booked 5 extra room with your credit cards

very likely insider job....

if the fella already checked in, go report police, caught the fella red-handed. If not checked in, ask hotel reception to cancel and dispute with credit card co (if already charged)

wait

Coz, if you look at hotel point of view, if they decide to allow u to cancel the booking (yeah, definitely not your fault, neither are they), they will lost 5 room to rent out as they had reserve the room for "fake you" since your complain/ cancellation only within 24 hours prior to check-in date. So, for them, it is a lost income already.

Unless the credit card company willing to reimburse them for the loss, they will try their best not to allow u to cancel i.e. refund back to u. It is the fault of the credit card company not able to pick up the fraudulent transactions, of course, they will investigate first, whether u r careless with your credit card or not, to held you responsible (i.e. u pay for it) or credit card co.

Either way, someone got to absorb the loss of 5 empty room booking