Cashe — Harassment from cashe

My 2 emi are delayed due to medical issues and on 31st May i paid one emi and i informed them next emi i will pay on 30th june but they want tomorrow itself and they are telling dont give fake comittements
And this people called to all my references and asked about the loan.
Because of genuine reason only payment delayed earlier also i took the loan and i paid before the due dates only. But some collection team is harassing like anything.