I have hearing problems. Recently I paired an Oticon pronto streamer to use as a hands free facility. Unfortunately no matter what I do my phone no longer rings on incoming calls. I have reset it checked do not disturb setting side bar everything.

I am deaf in my right ear and hearing loss in my left. In certain situations I use a Bone Anchored Hearing Aid (BAHA). recently ipaired a oticon pronto bluetooth steamer that allowed me to recieve hands free calls through my BAHA. Unfortunately when not using my aid and the streamer and blue tooth are turned off my phone does not ring when recieving calls. I have checked settings reset my phone through itunes spoke to the manufacturers who are insistent it is my phone. So here I am with a phone I can't answer as it fails to ring. I have been to a phone shop to check speakers and other related componetns they are fine so it must be a setting. Can anyone help I have done the usual checks side bar, do not disturb, everything I can think of. I am using the latest os system. So here I am with a phone I can't answer as it fails to ring.Any one any ideas?