Terrible service

Telkom is useless they know nothing about customer service, I've been struggling with changing banking details from the beginning of august. I went to the store and the consultant failed to assist me, she was so rude and wasn't interested in assisting me, i then went on Facebook to complain about her and the bad service and i was still not assisted. Now im being told about arrears that i mst pay for meanwhile they failed to assist me. Im canceling my contract with them. They very ***********.