shocking customer service

Unbelievable bad customer service. wifi fee with Mweb via Vumatel increased in question of 4 months twice. called to cancel they offered a reduced rate. month goes by calling numerous times holding on for some 38 minutes to request what was indicated on the 9th of April ie a letter to confirm the reduced rate going forward from 30th April, yesterday received email indicating sorry to see you go. called twice yesterday and three times today no action, no answering of call. Truly shocking.