MTN Store Gqeberha, *********** staff

I would like to lodge a formal complaint against the incompetence of store staff, MTN Store Moffet Retail Park, Gqeberha 18.06.2021 - I arrived at the store to upgrade my contract. I explained that my current package is 40gb/day 40gb/night for R299 and would like to change to 75gb/day 75gb/night for R299. I was not told that my router was outdated and would not be suitable for the new contract. The assistant helped me to upgrade to the new data sim-only contract and said it should be active immediately.19.06.2021 - I still have no data at home, despite calling the store several times and receiving unhelpful answers such as turning the device on/off, I was told to come to the store to test the device in store.19-.06.2021 - I arrived at the store, mentioned above, and after 2 hours of standing impatiently and waiting for the staff to play around with my device, they decided that it is incompatible with my new contract and I must pay for the new device B612 (at a cost of R1999). They bul**** me into purchasing the new device because I cannot change the contract now as I would be disconnected well into the following week (which I cannot afford as I need the device for work-from-home purposes) They were unhelpful in resolving the problem, they never once called tech support, and just switched the device on.off continuously over a period of two hours. They **** to me on Friday, saying that my current device B315s would be suitable for the contract. They never warned me about this huge unexpected expense of R1999 for a new device. I could have considered other options, having known this information. I was given no other option except to purchase the new device, because with a new contract I would otherwise have no data at home until Monday/Tuesday the following week which I cannot afford. I paid R1999 for the B612 in store, which was a costly expense for me, and has caused me great financial strain, and could have been avoided, should the store assistant have told me the new contract requires a new device. I have had connectivity issues at home since beginning the new contract. The connection keeps getting lost, and keep having to reconnect. The calls are disconnected and also are sometimes lost mid-conversation. I also have connectivity issues on the TV, where programmes are sluggish to load and also disconnect mid-way. This was never an issue with the previous router and contract (also with MTN)I have logged a technical issue about the new device on your website.I am very perturbed about the lack of responsibility from the MTN store manager. She did not take any responsibility about the lack of information given when taking out the upgrade on the contract. She was dismissive of the fact that my old device was not connecting to the network. She was not interested in helping, or calling tech support and was not interested in that she put me in great financial strain for the unexpected expense of R1999, even though it could have been avoided, should I have been told upfront.I was **** to by the store assistant that the new contract would work on my old deviceI was without data/internet since Friday morning, when the new contract began until late on Saturday afternoon after I bought the new router.I wasted hours on Friday calling the store every 30mins to ask for help about the device/connection, I wasted hours on Saturday calling the store, and another two hours in the store, wasting my time while assistants fidgeted around cluelessly.I expect a refund of the R1999 for the new device due to the incompetence of store staff, all my trouble, and huge inconvenience caused, as well as airtime and petrol wasted calling and driving up and down to the store. I am waiting for a detailed reply from MTN SA