Professional courier Janakpuri New Delhi - Document not received and it showing delivered and they are using abusing language

I sent my documents through professional courier on **/**/**** from Bangalore to Delhi but still my friend has not received then I called professional courier Janakpuri delhi on **/**/**** they told it will be delivered today but they didn't again I called them on **/**/**** they didn't reply properly they cut the Cal again on **/**/**** I called them they used abusing language and they told they won't deliver . Today on **/**/**** when I tracked it was showing delivered i am afraid that I may lose my documents . address of professional courier Janakpuri shop no ** front side b-* community center Janakpuri New Delhi ****** phone number ***-******** professional courier Janakpuri incharge vijay kumar **********