[Q] Root for Vodafone/alcatel vf685 please! topic

Hi! I can't root my alcatel vf685 of Vodafone spain. Sorry for my very bad english :( i can't root and failed process with all, vroot, unlockroot, srsroot, oneclick root, all apk chinesse, towelroot, kingoroot, framaroot..... Etc. Please, any idea for rooting this smartphone? Is a mt6572 dual core,android 4.4.2 and kernel 3.4.67 firmware 6180 Vodafone spain.
Thanks, gracias a todos! :)