Empty promises

We cancelled our contract with Chubb in October 2014, due to them having a bad attitude. Even trying to lay a complaint to the complaints department didn't help as it wasn't even logged. So finally we decided its time to cancel our contract with them. I got put through to a lady, Bianca van Wyk, who helped me very professionally. She sorted all the documentation out super fast. HOWEVER... we are still waiting for a credit to be paid over to us which was stipulated in the email that it would be paid over within 21 working days. 4 Months later and 6 emails from me to Bianca and visa verca, still no credit. I have sent her an email to inform her that I will now be contacting Hello Peter. It is ridiculous how bad their service is, how arrogant their staff, security officers and managers are, with the absolute exception of Ms. van Wyk. Chubb should thank her (or even give her a huge raise) for being professional at all times.