I have been a customer for 6 years. For less than ...

I have been a customer for 6 years. For less than a year we have had connectivity cuts, surely due to router problems. We have been following his protocol for months to resolve the issue. Now they are in the phase that monitors the line, but all are excuses, the IP has changed and you have to repeat, we have no record, etc. The weeks go by and they still don't call me to offer a clear diagnosis or solution. I change company.