Poor customer service and misguidance from Mtn

On the 14th of January 2023 I booked my wifi router for the second time for repairs which was so called repaired previously. On monday the 23th January received an sms which read that my wifi router was dispatched back to the store and I could collect after 3 to 4 working days. ON the 28th January I go to the store collect. The sales person had checked and informed me that my device has not arrived. From 28th to date I have not been informed if my device has arrived at the store. 2 months has passes I am still making payments for the device but I have no device and not being informed what is going on. At the store I was advised to follow the smses I would receive. Will I be compensated for the months without a device.