Mweb poor service

Downgraded my fibre package from 40mps/200Gig to 10mps/uncapped and paid R150 for the privilege of doing so. A few days later I'm out of data!! How is that possible? Phoned Mweb sales, waited 15 mins to be told that I have a valid complaint but must speak to "Technical". I was put on hold and then cut off. I phoned again, caller number 33, waited another 20 minutes and was cut off again!! I give up. Still have no data!