They always send my childs diabetic medication, but communication is absolutely terrible from their side and I already complaining several times

They always send my childs diabetic medication, but communication is absolutely terrible from their side and I already complaining several times. My last parcel didn’t arrive yet and was supposed to be send around 15 April. I tried to call (but they are closed) as we still haven’t received it and had to replace my childs sensor last night, and they haven’t send the sensor. We had an absolutely crazy month moving house mom in hospital my knee damaged my child sick, so I didn’t register they didn’t deliver up to the sensor expired as the rest of the meds was still enough. I am very disappointed i did speak to them on the 15 to make sure they have the new address and received confirmation that the address was changed but parcel didn’t arrive. Even the last few months I had to every time call 2 or 3 times before we actually received the medication. My child’s life depended on the medication. Very disappointed and no emergency number to call them on.