Poor Customer Service/ *****

Mix Telematics is a ponzi **** of a company. They upgrade a mix3 unit that i canceled in March and refuse to credit back my money. I spoke to numerous people from the company who promised to give me feedback within 48hrs to no avail & all the supervisors and line managers are always in meetings too busy to return calls to client's. Today i spoke to Olivia Mokoena in Accounts department whom does not have any ounce of customer service Etiquette whatsoever I had a horrible 20 minutes call of my life with her. This lady was very dismissive and condescending also showed no remorse whatsoever with how she handled my query. She was impatient with my query and told me I think I'm smart and that I'm teaching her about mix Telematics invoices. She insulted me over the phone and kept talking over me, she was not willing to assist no give me details of her supervisor/Line Manager. Mix Telematics gives such ********** service to client's it's so pathetic after I've been a loyal customer that had 2 Vehicles that installed a MX3 unit and never missed a payment. I am told "Barry Smith" is her senior manager and that her line manager is never is the office. Simple I just need the balance on my profile to be credited as I've logged numerous calls to advise that the new unit/upgrade was done *****ulently.