Failure for Service Delivery

Been with Draadloos now since 2020 on a 16/8mbps package. First year went great and service was really good. Complained this week of slow internet speeds at 0.07mbps and they "tested" it on their side saying everything is fine. We got a 6mbps speed after the test that showed everything was fine. Kept complaining as business hours speed must be 16 and not 6. My Wife's work is dependent on fast internet speeds. Technicians are sent and it is determined our Dish is too small and need to upgrade at our own expense. I have been paying 2 years for a 16/8 mbps line. This means supplier installed equipment on which he could not deliver his service of said speed. Been overcharged where supplier knew they were not able to provide the service since day of installation. No help from customer care as they say issue has been resolved and I can chose to downgrade my package or pay for the bigger dish. No reconciliation for 2 years over payment. STAY AWAY!!