Absolute NO NO service with regards to queries and incorrect billing!

I migrated as from the 1st of Feb 2020 to a cheaper package for both my contracts. 1gig@R69 for ****** and 2gig@R99 for 066204****. I am being billed R74 and R110!! I phoned numerous times and every time they escalate the query and then I get an sms stating that it has been resolved and billed correctly!! WHO CAN SOLVE THIS WITHOUT ME HAVING TO PHONE ALL DAY AND NOBODY HELPS! It was done over the phone, I do not care what your quotation says, I did not receive any quotation via email! PLEASE CHECK your recordings!!!!! Have you guys reversed the contract cover on BOTH my accounts as well????