incompetence

Hi on the 23rd June,2015 i was at Vodacom in Killarney mall, I explained to them that i am retired from my company as from end of May and there is no income.<br> as i was no longer working i asked them to close my account with vodacom. I also asked for my full settlement amount including all penalties.<br> the amount was R1012.10 I immediately paid this at Standard Bank and came with the proof of payment.<br> The staff at Vodacom emailed my deposit slip to the head office.<br> Now after 5 months vodacom phones me to say i must pay R1200 that is outstanding or they will take legal action.<br> Is this Vodacoms policy ?