full payment. no service. no goods. only excuses

I Paid in full for them to make me 2 patient hoist slings. I sent the measurements and pics of what it should look like. I sent proof of payment and confirmed also via phone that they did get payment. It was explained that its urgent and that the patient has cancer and needs the slings. I was promised that they will make it after the easter weekend. I called at least once a week and everytime there is a different excuse. They are rude over the phone when i ask what the progress is on the goods, they were supposed to make and already received payment for. One excuse was that they got another big order in to make tents and when they are finished they will attend to my request. I feel that is unacceptable because i also paid for same service and just because its not thousands of rands it seems as if my order was pushed aside. The patient needs the slings for the hoist as she cant so anything for herself anymore due to cancer...this was explained...but excuses is all that i get...no service...only rude excuses. When i said that i want to come and collect the material i was asked if they must order it for me. I paid for the material and for them to make it. Its been more than a month!!!