Buisness being left with no service or phones for weeks

One of my stores, has had the internet go out and with it our phones.  After a painful trip through the AI IVR an agent told me the first appointmnt I can get in in July.

I find this highly unprofessional and insulting that a business level service feels its ok to leave one of my stores basically shut down for 2+ weeks.

I asked to to speak with someone higher but was refused.
How can I escalate this and get some service?