Yes please

I apply for a contract with blue label last month on the 20th July they debited R90 it was a special got the phone on the 25th of July it was not working called them on Friday the 26th the phone only worked on the 30 July as soon as I saw it was activated was still on the line with them check my balance was wrong and I saw message from Vodacom R20.49 deducted before I know it R29 was deducted I have not used the phone so I called and emailed them on the 30th to cancel the contract because I can sense I am dealing with mafia's .I only got the response from them today saying they must still debit one month for cancelation fee which I feel it not fair why must I pay cancelation fee when I cancel within the stipulated 7 days its actually one day