Poor service from Cabana Beach Rentals

We purchased our timeshare week at Cabana Beach Resort in 2017 and had a few memorable years there, however due to circumstances we have been unable to use the unit for the past 3 years and have asked Cabana Beach Rentals to please rent the week it out for us. They diligently supply us with the forms which we complete and submit and then nothing happens! Our follow up emails go unanswered. From a resort that claims to be "sought after", there should be no issue renting the unit out?