INCORRECT BILLING DUE TO SWITCHED LINES

I contacted Telkom this morning regarding the status on reference number ***5. I was advised by the consultant that this query has been resolved and a credit will be passed of approx. R170.00. My dispute is regarding the telephone calls that were made from 05/09/15 till 23/09/15 which does not belong to me but to the line that was switched my line. During this period Telkom had advised via SMS of an infrastructure upgrade and during this process switched all our Telkom lines. This was not rectified by 15/09/15 and Telkom was contacted again. The lines were only sorted out by 23/09/15. So the billing charges on Sept account for R173.66 (excl vat) and Oct account R331.61 (excl vat) is not for my account. I do have the telephone number which was switched with my line and also sent it to [Email Removed] I kindly request for this matter to be resolved urgently. Telkom has really inconvenienced us during this period and now holding us responsible for incorrect billing. Reference numbers: 124CNZ***/SM163981.