Lease agreements between private and government

We have an agreement as a private hotel operations contractor and a government property - hotel that we have been running for 21 years. They had made typographical errors in the agreement showing contract till 2018 with payment schedule which we were following and making payments however they are saying contract is till 2016 and removed us from property without any notice - matter is pending in High Court. There is a clause in agreement stating that we are to be given first preference for renewal upon expiry of lease with an increase in 20% of last made payments. We have also made investment on the property by way of 10% of civil work and set up of all furniture, air conditioners, etc as property was new when we took it over via tender. The contract was renewed in 2005 after 10 years due to lack of handover of full land as per tender along with several other issues but dates were not altered however the payment schedule was till 2018. All of a sudden the government of tourism came and sealed the property without any information saying contract expired. There are 50 staff unemployed and without work and no intimation that they were planing to throw us out without so much as a word. We even in the last year sent several proposals for development of property to enhance tourism and make the property sate of the ar to which government was entertaining all the while only to seal the property suddenly without any information. Please advise....