ITE hearing aid sounds all plugged up

Last week I got my first hearing aid. It is a hearing aid made by resound. I can say I am not too happy with it. Im supposed to get my left hearing aid on monday, but I don't know if I want to continue with this hearing aid.

I don't know if all in the ear ha's sound like this one did, but I felt as if I was talking with a garbage can over my head. my largest complaint is the shrill sound when I place a phone close to my ear. I don't know if I can deal with that because I answer the phone a lot at my job. I was supper disappointed because I was hoping that these hearing aids would work.
My second selection would be the Unitron Fuse but i was wondering...do all in the ear ha's give a plugged up feeling? I have heard that they make ha's that are phone friendly, so I guess i will have to continue looking.
if I were to look at a bte ha, do they cause problems with wearing glasses? as of now I only wear glasses for reading, which means I remove and replace them quite often. I was worried the ha would feel uncomfortable with the glasses. is anyone able to tell me about what they have experienced? thanks...