No tenant for one whole year

I have a bought a Lease-Back in Carcasonne and one year later, no tenants have been found for almost half of the 80 apartments in the block. What I had mistaken for rent on my account each month was in fact insurance

- I discovered this by accident when calling the 'gerant' about something else - there has been no official communication giving updates.

- There may be a problem with the tax rebate due to no tenant and therefore no real rental income

- Nobody seems responsible - I am dealing with a junior person, although helpful. It is hard to get clear explanations.

In addition, I am now concerned that the real value of the property is significantly below the value at which I bought it.

Anybody had a similar experience.