I did see a lease filed under Finch, so was assuming that was yours.
First check through all your paperwork associated with the offer and your signing of the lease. Did you have any draft payment letter that you signed that had a particular time frame associated with it? If so, then you have to abide by that and follow the instructions that go with it. Make sure you send by certified return receipt mail and keep a copy of everything.
If not, then you need to write a respectful letter to the company listed on the lease (may not be the same company as your land man was from) requesting payment. Send by certified letter return receipt. If I were doing that, I would give them ten business days. Tell them that you will file for non-payment of lease with the county after that date and request that the lease be rescind due to non payment. You may have to get an attorney involved in order to do that.