VODACOM Telemarketers please leave me alone.

I have a contact that is due to expire in less the 3 months time. All I want to do is wait it out and cancel upon expiration. However, according to vodacom cancellation call center, I have to wait until the month of expiration to express my desire. During which time, they CAN’T ask their telemarketers to stop bothering me. Of the 3 calls I received, 2 of them don’t take no for an answer, they just want to keep me on the call and ask me funny questions which end up with me dropping the call or swear at them or leave them talking to themselves. VODACOM TELEMARKETERS pls leave me alone.