Incompetence and Lies

Took out a loan with them it came with a 36 months plan before I signed I told them I would like to change to either 12 or 24 months I was informed to sign because the system automatically approved me in those terms I can only change after I pay my first month installment which I did now I’ve been calling them since last week from sending emails and all today I called again after being transferred from one person to the other and wasting my airtime now I’m told I can’t do that after being told I can by the store clerk as well as their consultants one said they can help the other days they can’t ..all incompetent I would never advise anyone to take something with them now I’m stuck with a 36months payment while I requested lesser months and was guaranteed it would be done !!!!