Poor Service Sasfin

My business has bough a printer through SASFIN - WHAT A MISTAKE!!!!! It is a lease agreement but the amount payable differs every month?? I am trying to get hold of someone to find out what the reason for that is. I have phoned 3 times this morning - 1st time I held for 7 minutes then cut off. 2nd time a bit longer and then cut off again. I have phoned now for the third time - I held for 15 minutes but then put down the phone as it is absolutely ridiculous!!!! I have send an email now - let's see how long that will take...... I would like to get a settlement - the best would be to get SASFIN our to my system.