Telkom refuse to migrate contract

I had a telkom contract for 2 years. At the end I wrote a letter and went to cancel my contract and to migrate to pay as you go. I recieved a mail and a sms that its been migrated. But the number was still open after 2 weeks. Then I Receive a statement from telkom. I went to the shop and the people there said its migrated and they dont understand the account. We phone and went inside and no help. Now all of a sudden they said they try to contact us and we didnt answer to make sure we want to migrate.