Terrible Service

On the 28th January 2015 I wrote to cancell my chubb services, they told me that they had to come and remove the radio at a cost of R320.00, I informed them that I would not pay, so I was told to remove the radio and they would not charge, which I did and they came to collect it on 2nd February 2015. Today I see that they have charged me R320.00 to remove it. I then phone them and was told that it would take 2 to 3 weeks before I got my credit into my account. I then asked to be put through to a Manager in head office, but was told he wasnt available, but will leave a message for him to urgently phone me since this morning at 8:15 nobody has bothered to call me. If I have to wait for my money I demand interest.