multiple collection Calls

I had issues with my medical aid and I ended up with some Lancet bills.

I made arrangements and started paying the account. I was then called and advised that I have not been paying. I provided proof of payments made and I was told that I was using the wrong reference number. I got this reference number from Lancet offices.

I proceeded to pay the account monthly. All of a sudden I am getting calls from sustainable collections plus Strauss attorneys saying I am not paying my lancet bill.

As I write this I have been making payments but I am not even sure what I owe on my lancet account because the people who call me claim that they don’t know and they always ask me for proof of payment.

On the first call with Lancet I requested that my accounts be combined so I can pay one payment due to the financial starting I had caused by medical bills.

Can someone from Lancet provide me with a combined account of what I owe and the correct reference number because this is very frustrating