No MTN signal in my area for a week - losing customers!!

I have had a week of no signal or erratic signal. I have daily phoned MTN for someone to sort the problem out. but it is still not fixed!! Only 1 or 2 bars shows!! I work from home in a residential suburb. Only rarely can I phone anyone and only rarely can someone get through to me. If someone phones it says: "Number you have dialled is not available...". My clients who have placed orders with me cannot reach me... I have not for the past week (till now with another Vodacom sim card and phone) been able to phone anyone one! I can still receive whatsapp calls on the phone. have excellent wifi. in spite of no MTN signal So I bought a new phone with a Vodacom sim card and I can receive and make calls with a 4G signal, from the same room where the MTN signal does not. reach. A three-minute drive takes me to a different suburb. I can receive and make calls away from my suburb. But have to spend an hour or two in my car that way! I am a breadwinner and am losing business, when, after lockdown, I am just starting to try to get my business up and running again! I have relayed my plight to MTN but they say it could take up to a week to fix!!