Ola - Ola Money postpaid fraud and repeated threatening calls

Respected Directors : Ola Cabs,
I am a educationist and ethical village farmer. I and family use Ola cab occasionally when we travel to cities. I always pay auto or taxi ride by our google pay or cash. On all rides, we have paid our ride amount as soon as we got down. As we use ola cabs occasionally, we have no idea absolutely have no idea about ola postpaid services. We make sure that our ride payments are done imm after each ride and the drivers have received it by cask or google-pay. The last ola ride was used in Feb. But now all of a sudden we are getting text messages and continuous call from ola (*-* calls a day) to clear dues -Rs. **. The call seems to be a call-center male and female who talks in very unprofessional language. This is highly unacceptable way of doing business. We are using Ola app for many years and we considered Ola as a professional and ethical company. But this modus operandi of the company is unethical and illegal. We are sent some online link to pay due which are not responsible. We are also not sure whether the calls received from various numbers is from OLA company or by some fraudster.