engaged

 find the number of the building suppliers on the computer

, make the call. The telephone is engaged.

, make the call. The telephone is engaged.

, make the call. The telephone is engaged.

, make the call. The telephone is engaged.

, make the call. The telephone is not engaged.

Ask whether it is possible to buy things as a private person despite the pandemic. The friendly woman says it is, and asks for what goods are required. She says that she will make a connection to the people in the plaster and wall dressing section.

the telephone makes a ring tone again.

rings for seventeen minutes.

Hang up.

Call again.

The same woman on the line again, explain the problem.

She  says that she will make the connection to the people in the plaster and wall dressing section. 

Tell her that that will not do, they do not answer the phone. The reply is "Oh". She says that she will try something else. Thank her.
Listen to her conversation with the people in the plaster and wall dressing section. Then she says that she will make the connection.

the telephone makes a ring tone again.

Full on apprehension, this is telephone terror.
Then a male voice answers.

Explain that five bags of mortar are needed. Yes, the cheap variety. Give the name, the telephone number, and ask when the stuff may be collected.

At once.

That is the good news.

Shopping in a pandemic.