Snail pace Internet

This has been going on now for at least four days. Internet speed of between 0.8 and 3 mbps instead of 10 mbps. They reset my modem, did not help. Send me an App to install to find the problem. App says it is the outside line. I could have told them that. You wait 2 days before anybody responds. Absolutely pathetic!!! Why don't they just admit they cannot handle the traffic on the line because of lockdow. If this carries on I want my money back for this month. Will find out where else I can complain, maybe ICASA.