No response after 10 days of trying to reach sales department

On Friday 1st October I sent an online sales query in as none of the telephone numbers weer answered. I submitted another one around the 4th or 5th October and again tried to phone the sales staff to get a specific LTE quote. Again no answer to online query form, and after 1 full hour on the phone I reached corporate sales and other departments I was transferred to with no-one seeming to understand what "an LTE router with a 100Gb cap monthly contract" is....? 10 days later and still no calls returned or sales queries responded to. Yet another hard experience which reinforces just how shoddy and bad MTN's service and sales staff are.