Hello,
Is there any way to get back rur`s that you spend on RPG items like cloack or hats?
Or its some way to move it to another character?
Nope and nope. Cloak, untradable head accessories (some of them can be traded and some cannot) are attached to the character. Once you but it, its done. The only way to get back some money is to sell character (but in 99% cases you wou'll get less than you spent on GCM, cloak etc.) Thats why you should consider buying it very carefully.