Tikona — Network Issue and slow speed

We have recently activated Tikona internet as our home network but the speed is extremely slow for almost most of the day, every day. We have sent multiple emails to their customer service but forget about the providing resolution they haven't yet acknowledge the emails. Nither their customer care is responsive to my calls.

The utmost speed is up to 0.96 Mbps and I opted for 15 Mbps.