Billing Issue Not resolved. No feedback, Bad service

Query Number SR180 ********** 68, I have made numerous calls to the fibre call centre and sent numerous emails and NO ONE HAS ASSISTED ME! I send the same email every month, but every month you get it wrong and bill me incorrectly and its a different amount every month. Please advise why you are charging me R774.84? You sent me an email date 13 March stating i would be migrated from the old Evotel pricing to our new Vodacom Fibre and as a result of me being a valued customer, you will reduced monthly subscription to R549?

With the VAT increase my bill amount should be R 553.81 not R774.84.

Please fix the incorrect bill amount before and pass the nessesary refund into my bank account asap with as follows:

June you debited R774.84 instead of R549 refund due amount of R221.03 a

May you billed me R604.26 you need to refund me R55.26

April you billed me R 599 you need to refund me R50

R329.29 in total