Electrical grill? had 200a service/meter/lines installed contained by the gararge behind my house just...

had 200a service/meter/lines installed contained by the gararge behind my house just now, when they hooked the lines the weatherhead was floppy and now have blown completly off. my interrogate is: is it safe to reattach it myself? point of interest: It is raining/flurrying here and is supposed to verbs doing so for the next few days..
HeLP! Broken Oven... What to do?
Answers:    time to hail as them back dont risk it
I hold a small bleed contained by my...
Hell no! If you involve to ask walk away. I'm a contractor and I do some electrical. But If I'm not sure I phone call in my pro. Not to mention they stipulation to fix there error for free. Who know if it's properly grounded?