How Long Does it Take to Repair Wireless Extender?

Well over a month ago we reported that our Mweb Wireless Extender had ceased functioning. We were told that Mweb had run their tests and that the problem was on their side and had been referred to their technical department. We have called and emailed repeatedly as this is an important part of the Mweb offering for our SMART TV to work effectively. We have now been told five times the same story - the matter is with our technical department. No explanation, no answer to queries on estimated time to repair!? Our last mail said if we hear nothing by 23 Feb we would report on HelloPeter. After five extra days still nothing. Surely Mweb should either repair urgently or supply a new standard non Mweb Extender