Some persons believe that it is Shirk (associating partners with Allah) if you call to the Awliyah Allah (Saints) for help, for example, "Ya Ghous, Assist me" or"Ya Khwaja, Assist me".
Murshid Kamil
The body and the soul together make up a complete person. While the body belongs to this world, the souls origin is the realm of Divine Power. Allah Taala by His Divine Power has united them and made provisions for their growth. Just as Allah Taala has provided various foods for the nourishment of the body, he has also provided sustenance for the soul. This vital sustenance, which invigorates the soul, is the Remembrance of Allah.
Quranic Verses With Translation