10-14 Days Repair Date exceeded by 2 months!!!

Dear Sir/Mam, I called the FNB Device call centre in the beginning of October to have my device fetched for repairs as it was faulty (Note the device was only a few months old). After much struggle and multiple phone calls/e-mails, the device was fetched at the end of October. The Turn around time for repairs was supposed to be 10-14 working days, which would put the device back in my hand at the middle of November - to date I have not yet received the device nor can the call centre give me a definite answer of what is going on! I am not prepared to accept the device now as this is unacceptable and I should be refunded for all my premiums paid for a new device which I do not have for around 3 months already! Please URGENTLY ASSIST!!! I am an FNB Private Wealth Client and after this horrible incident am looking at changing banks! The reference number is FNB140508