Horrible download speed at Vodacom O.5mbps

Lte speed dropped from last week. Used to get a download speed of over 10mbps in Uvongo, South Coast, KZN. Could stream and use multiple applications without any problems. Logged incident on the 9/01/2020. Was told that I would have a resolution within 48hrs. SLA expired 13/01/2020. Been calling and calling and was promised a call back. Still nothing. Speed now at less then 0.5mbps on an LTE sim. Ridiculous. Nobody has called me with feedback and case is still open. So disappointed in Vodacom. Never expected such appalling service. I'm paying R299 per month and I cannot do much with speed of less than 0.5mbps. Someone please help. Thanks