"Absolutely awful practice "

I don't even know where to start with this awful surgery! All I need is a telephone appointment to get a sick note due to a very serious illness....I rang 118 times at 8am and it was permanently engaged and I've had this problem everyday for a week now....by the time you manage to get through there's no appointments left. The staff are so rude and unhelpful. My illness is stressful enough without this awful surgery making things even worse. My work place are telling me they need a sick note ASAP but I can't get one!!!! Disgusting!