poor service

I went into the vodacom shop at Fourways Mall to cancel my dad's contracts as he recently passed away. It seems that the staff and the manager are not fami**** with the process. I was told that before I take over one of the numbers that I had to pay the account up to date. Why am I responsible for that!!!! It is not my account. I have had to deal with Vodacom on numerous occasions and have had an issue every single time.