Telkom's LTE Home Internet Sucks.

I have tried several times to cancel my contract with Telkom which pertains to their potato-slow internet (LTE 10 mph uncapped) - which is costing me R900.00 /month. My speed is 10 mph for the first 5 days of the month, then drops to an average of 1.2 mph for the rest of the month and hence my dissatisfaction. Telkom is making it difficult for me to cancel my contract as I have tried several times, which include contacting the national complaints department and online service, as requests are just being ignored and hence not processed. During the lockdown period, it's even worst as Telkom is unreadable, with no contact, radio silence at least their customer complaint ratio reduced substantially during this period.