StashFin — resolve the issue

Address:

House no 741, convention centre lekhraj market, Lucknow, Uttar Pradesh, 226016

I took loan for my medicine from stashfin (Akara capital advisors pvt ltd) initially they asked us to pay emi more than what was fixed earlier, then when we opposed and came up with facts and figures they said due to some problem in the system the same was miscommunicated. We started getting calls to immediately pay the emi. Since it was first time we paid the same through netbanking. Now it is the same story every month. I tried to contact stashfin over phone and every time but i couldn't contact them due to their bad facilities of customers calling care. Now since last six months i get message threatening me for my poor cibil score.
Request concern person to kindly intervene and resolve the problem