Sorry if I am repeating, haven't read all the responses in detail...

Basically: 1/ You are bound to stay out your lease, unless released by mutual agreement in WRITING. 2/ If you break the lease, you still nee to pay out costs for advertising etc. for new tennant until end of your lease. 3/ Selling the house means you are required to provide reasonable access to the property for inspections - it should be in your lease, have a read, it is the law and basically means allowing them access for 1 home open per weekend etc. You CANNOT refuse them ANY access for inspections despite you being the lease holding tennants. 4/ Any purchaser MUST take on your lease under current terms until the end of your lease period. At which time they can refuse to offer a new lease or increase rent.

HTH Sorry they are being PITAs, but like MD said - I would let them know they are bound by the lease, just as you are, and they can have 45 mins every Sunday afternoon, organised 2 weeks in advance, for home opens. GL