Land grabber trespassing private property

I own a plot measuring 50*100 since 1995. All the documents of plot are available in village panchayat as well as registrar office. I have got a search report by lawyer confirming everything genuine as well as valuation certificate from a valuer of many nationalised banks. I have got a Cc limit of Rs 20 lakhs from a nationalised bank against this plot. The chaturdashi of my plot mentions "PANCHAYAT PADAT" as adjoining land on the north. But a certain person in the town has not just built a compound wall around this panchayat land but also dismantled compound wall of my plot between 25th to 31st january 2017. He has encroached 16 feet inside my plot by building a new compound wall. The documents he is using to claim the adjoining land are not available in panchayat records(RTI reply confirmed). The patta he is using mentions my plot on the south but it was issued two years later after mine. There are many other flaws in that patta which i have mentioned in an online complaint filed to SP sahab(since local police was reluclant to help). I have sent requests to DM sahab, ADM sahab, Tehsildar sahab and municipality(land now under municipality) to vacate the land via emails but ni action has been taken. Municipality is lingering on the transfer of my plot from panchayat to municipality for no reason. These are only assisting the land grabber. I am considering lodging a complaint with SC ST commission. Kindly guide.me through the most effective course of action from hereon