Sell Direct Marketing

I terminated my contract at a Telkom shop and a few days later Sell Direct Marketing phoned me offering an upgrade. At no time did I accept any offer and actually hung up on them. They actually tried to phone back 3 times and I did not answer. A couple of hours later a Sell Direct agent phones me to ask if I was satisfied. My reply is unprintable. Then I get an email from Telkom asking me about my satisfaction. I am livid!