MTC cobra F1

Just bought one , second hand, arrived by post, like new great optic, EXCEPT, both windage and elevation turrets have NO effect on the cross hairs, no movement at all,

?s are, has anyone experienced this on this or any scope, is there a fix, am I missing something, or is my only hope Ebays return policy,

its a REAL bummer. as I really wanted wanted an F1, but now!, 

thanks folks.
 
Thank you gentlemen for your response's.

T3PRanch, it seems that way,and I am awaiting the Ebay sellers response. I contacted MCT, not expecting them to cover, but hoping they may offer to repair or advise, they don't repair, Gary at MTC who seemed a decent chap suggested someone who may be able to help, so that's an option should return fail, again thanks.

Bob O, I put the scope in a rig that held it steady AKA Joe Rhea, then I took it to a fire arms dealer, he attached it to a rifle put the rifle in a stand, and attached a optical device to the end to the rifle barrel, he agreed turning the turrets was having no effect, again thanks.

I am quite new to this game, but have watched a mountain of youtube and read the same, I have seen/heard of bad tracking a plenty, but NO! tracking at all I have not seen/read, this is a (at the very most) year old scope without a mark on it and all the other features seem to work perfect.