*********** call centre agents don't care about Fault

I have had a fibre speed of 0.1M on a 20M line for two months now, and have called 10210 at least 7 times, spending more than 3 hours in total on the line, logging multiple faults, and each time the fault just gets closed saying they've "resolved" the issue. Some agents clearly don't Care, and cut the line after 20 minutes.

I've never been more frustrated dealing with such *********** call centre agents.

Please assist before I cancel my contract.