VODACOM A SECOND USER COMPANY

It is absolutely ridiculous that when you sign up for a contract you don't get a fresh unused number, you get a used number that belonged to somebody else, the last month I have received phone call calls from collection agents asking me for the person that had the number prior to me, I get sms's and that are not for me. This is unacceptable one pays for a new service and get given a used service. I cannot even use the voicemail because it has been pass-worded and no its not 1234 or 1111 or 12345 or 11111.