Expat Properties — Expat Project - MOPA Paradise

Like others here; we booked plot through expat in Malewad Sindhudurg. First instalment paid in Feb2016 and Final payment done in Sep2019. However, handover delayed for ever.
Now new excuse that the government ruling has changed and cant handover small plots. They are asking if interested in taking a bigger plot for which the registration is going on. Not sure if this is true. Asked them to send the government document showing the effective date of the rule change, but since more than two weeks no document has been sent. They keep postponing the date when they can retrieve the document and send.
Can anyone guide best way to cross check and get this resolved?