Can I block a number and have it not be able to leave voicemails?

I'm trying to avoid my dad getting a voice mail from the school to go to a parent teacher conference night. This is the second one and if he goes it will be a second time my dad gets disappointed. The conference is on Monday! I can only hold on to his Iphone for a while and the school calls and leaves a voicemail through out the whole weekend! Maybe 4 or 5 max. The last time there was a conference even in the morning when we were on our way to the school they leave an extra one. It's like the school is really trying to make sure parents get the message. I get his Iphone so he won't here it when it rings then I delete the message they leave. I can't catch them all and it's pretty irritating. One of the voice mails my dad is gonna hear! Please help! I want to show my dad my grades later when they are way higher so I won't have to worry about getting yelled at. How do I block them on the Iphone?! And if I block them will they still be able to leave a voicemail?!

Apple ID App Store Problems?

I used to have a (I guess you could say Apple ID with credit card) but I forgot all my questions and stuff so I decided to make a free Apple ID instead but when I made the free one and I tried Update YouTube but then it said " This update is unavailable for this Apple ID either it was bought by a different user or the item was refunded or cancelled?" What the heck does that mean? I don't know if I have to reset my iphone 5s or anything but if you know why this is doing this please help me out.

Do I listen to my music too loud?

I'm 14 years old and listen to music on my iPhone 4S with the basic apple earbuds (not the earpods but the older earbuds that came with the phone). I usually listen to music at around 40-75% volume on the phone, depending on the song and how loud my the environment I'm in is. If I'm in class and doing work etc I will have the volume lower, where as in hallways I will turn it up to around 50-80%. I will normally turn up the volume to drown out the noise around me (High school). I usually listen to music for about 1 hour a day with earbuds (just enough to get me through the school day). I'm just a little paranoid about damaging my hearing. Would the volume I listen to currently and the amount of time I listen be damaging my hearing in the your opinion(s)? And also what devices+earbuds do you use and how loud do you have them normally?

Any serious answers would be greatly appreciated thanks.

Cydia crashed and now my iPhone is mucking up

My boyfriend downloaded cydia onto my iPhone but he was unsure if it'd work on the iPhone. It then starting rebooting a lot and then last night i got a notification saying cydia had crashed and stuff. Now my iphone won't turn on, I press the home button, it won't respond. I press the lock/unlock button and it still won't respond. It still doesn't respond when i put it on charge too. My boyfriend doesn't know how to help. So how can i delete Cydia when my iPhone won't respond? (this is my new ihone 4s, ios7 update)

Imessages not delivering from mac?

I'm trying to send a message from my mac to an iphone and none of my messages are saying "delivered" underneath. Its not saying "not delivered" either by the way.

I just sent a message to my friends iphone who is in my apt to see if the message would go through and it was delivered fine.

Do you know what the cause is? Is it the receivers or do I need to restart my computer? The person i'm trying to message is overseas if that matters.

Can't send pictures with my Iphone 5?

I'm really confused by this. Before the iPhone 5 I had an android phone and I was always able to send pictures. I heard that you need to be connected to cellular data, which worked for me. But why do I need to have that on? Even when I have I message off? I currently have mms turned on and imessage turned off and I still need to be connected to cellular data to send a picture text. Why is this? I did not have this problem with my android phone… I have at&t is that helps.

Iphone doesn't work or turn on?

Iphone 4 doesn't work/turn on when its not plugged into a charger… When it is plugged in works fine… I did drop it and its cracked… What's the problem? And how can i fix it? How much would it cost me?