Unable to cancel expired LTE contract.

I am unable to cancel my Telkom LTE contract, after expiry.

I tried to cancel in store, however was informed this is not possible - that i have to send my cancellation form to ********** My first email bounced back because the mailbox was full, I got lucky the next day and the form went through (January). Received my bill for April - so obviously this didn't work.

Tried to cancel online via Manage Account various times - just to receive a message on the last page that it is unable to complete my request.

Tried to send tweets to Telkom support - gets ignored.

Tried Talk to Us via Help on website - unable to open chat window.

None existent customer service.