Contract for Deed- lender? trying to foreclose not as agreed.

[Thomas Smothers]

My wife and I entered into a contract for deed nearly 2.5 years ago. We talked about refinancing with the seller but there wasn't a specified time period by which this should be done nor is it in the contract.  We received a call in the last couple of days that stated we must have refinanced by December 1st or accept 25,000 and move out. This isn't a normal property. It's a huge church with an attached building via a bridge about 20 ft. long. The attached building is 2 story.  We decided to live in top floor and rent out the bottom floors rooms as offices or storage.  We currently rent the church out but have other plans for other ventures thru said building including a coffee shop, using as a wedding venue, reunions , birthday parties etc. I know everyone is going to say contact a Lawyer but it states in contract not allowed and can't file with county. I know this is probably illegal. Need some solid advice please.