Thank you very much.

The phone has been ringing off the hook all these days (Or u can just use the present tense )。电话 means ☎ or📱，打爆了here means a lot of people are calling you

電話被打爆了啦！ ＝電話接不完。 It is flooded with phone calls. The phone rings all day long.

电话means telephone calls, so don't separate 电 and 话。This sentence means: There are two many telephone calls every day. Here, 爆means explosion, which describes the fact that too many calls and it just like a hotline and the telephone is going to explode.