In a pinch, if the twist tighten nuts inside the tubes do not engage properly or are worn, use duck tape. A little applied around the cylindrical 'nut' usually increases the grip tenison enough for the internal twist fastener to work.
I have fixed other's poles several times using this 'field expedient' method. It works. On one foray, I fixed a pole at Orisson, just outside of St. Jean Pied de Port. The young lady later found me at Santiago to thank me...the poles made it the entire distance....over one month of use.
Failing that, or a proper repair from someone with the knowledge and tools, apply duck tape to the outside of the pole sections to secure adjacent segments in place and prevent sliding. I would not bet my life on the temporary fix, but it may work for you.
Hope this helps.