Mums had a heart attack

Like Shandy says, perhaps try a different phone.
I know that this may sound harsh, but come Monday, just keep bothering them.
And get in touch with PALS, the patient liaison service x

Katyj I’m so sorry about your mum.

Just a thought, but many hospitals now have much easier access to iPads for patient use. It’s worth asking about, as even though she may not be able to hear you, you and your mum will be able to see each other.

It’s always difficult at the weekend.
I really do feel for you, everything is so hard at the moment

Sorry to hear this Katyj, I hope your Mum is comfortable, so sorry she can't hear you on the phone. Could anyone lend you a phone to take in so you can video phone?

I haven't had any personal experience Katyj but didn't want to ignore your post.

I'm so sorry, you must be very worried but she's in the best place but I understand how awful it is not being able to visit. It's good that she's stable and they've looked into her medication.

I hope she gets well soon and that you'll be able to see her.