Horrible service by Elite Mobile!

Awful experience with Elite Mobile! I made the mistake of being convinced into a "never to be repeated" contract in November last year. I was excited to receive my new Samsung Galaxy S9 and Huawei Y3. A couple of weeks later I received the Huawei, but not the Samsung. And about a week after that the Ram couriers knocked on our office door again. Was it my Samsung being delivered? Alas, no. They came to collect the Huawei!? Not knowing what was going on, I refused to give the phone to them. I then contacted Elite Mobile, asking them where my Samsung is. They spewed some nonsense about the wrong order number, or some such, and that they had to first collect the Huawei, so that the order can be redone. This was the beginning of December. A week later, nobody came to collect. I phoned Ram couriers, they didn't have a collection order from Elite Mobile. I phoned EM again, fuming! Was just told the collection was escalated and will be done in 7 to 14 days. So, today is nearly a month later. And the Huawei is still on my desk. I phoned them again. And again with the escalation story. I am at my wits end!!! Basically, they're getting the money each month, but I have not even received the Samsung, and can't use the Huawei. What do I do????? Obviously, I can't cancel my contract with them, until they've collected this phone. And I'm sure trying to cancel the contract will be even more of a nightmare.