Bad behavior and attitude from Vodacom associate

I was called by vodacom and was a number from Durban, jhb and the guy called me the morning and asked to call the afternoon he called me and explained the plan and merging and I informed him I was not interested he Continued to try and make me agree to it when I am informing him I don't want it as I have enough airtime and wifi data but when I politely told him I'm not interested he just threw the phone down in my face with a really bad attitude. This is not the first time I got this horrible customer service from Vodacom and I hope that Vodacom employs better people more professional and with better attitude because speaking to the associates at vodacom has always been the worst experience. Please improve on associates behavior as it's vital and because of that you may have lost a valuable customer Thanks