Waiting 2 weeks for a refund- Imperial Daihatsu Boksburg

Saturday 30/09/17, I purchased a set of Brake Pads from Daihatsu – Boksburg Branch, the sales person who assisted assured me that if the part is the incorrect one that I could return these items as long as the receipt is present. On Sunday I noticed that the parts were the incorrect sizes, therefore I would return them. On Monday 01/10/2017 I returned the parts and asked for a refund, all was agreed upon and I was requested to send a few documents (copy of ID, bank details) via email in order to process the refund. Once I returned to my office, I provided these details. On Wednesday 03/10/17 I sent a follow up email asking for confirmation that my previous mail was received as I’d received no response. On Friday 06/10/17 I had to call once again and request feedback, to which I was promised that it would be done on the following Monday - 08/10/2017. I requested that i be sent an email stating this information as i now wanted to keep a paper trail. This past Monday (09/10/17) morning I had still not received the email I had requested on the Friday (07/10/17), so i sent another email expressing my dissatisfaction at the service I’ve not received, not long after, I received a document to complete with all the necessary details for the refund to be processed, this document should have been provided to me the day I originally returned the products and not a week later. Wednesday 11/10/17 I provided the document I was requested to complete and up until today I still have not heard back from Dihatsu - Boksburg. Over the course of 2 weeks, I’ve made numerous phone calls at my own expense, sent several emails during my working hours in order to get a refund of the items I purchased. I am extremely unhappy at the service I’ve received and as a service provider the least you should do is to communicate with your clients in a timeously manner.