Annoyed!

I app**** for a new add on contract with MTN online, there was no correspondence for a week until i called and was told Mondo is doing online orders and i should call them. Upon calling them they told me to send in documents they will revert to me which they never did. Ever since i spoke to the Mondo people I've been hounded by telesales phone calls it's ridiculous. Can you please remove my number from these people hounding me as i did not apply for that.