If the furniture is installed and there is no arrears receipt, can I appeal?

No. If you don't believe me, you can try it and see if the court accepts it. There is no IOU to sue for arrears, but there must be evidence of the cause of the arrears.

Arrears generally do not need an IOU to sue, because arrears generally have evidence of the cause of arrears. You must have an IOU or a loan contract before you can sue for borrowing, and yours should be a loan, not an arrears. Arrears such as arrears of wages, arrears of goods, arrears of medical bills, arrears of rent, arrears of compensation, etc., all have reasons for arrears, that is, what money is owed.

For cash, that's a loan. An IOU or loan contract is the only evidence of a loan, how can you sue without evidence? The law is about evidence, and the court is the place where evidence is talked.

The transfer voucher can only prove who you paid to on a certain day of the month, and it is only a proof of payment, not a proof of borrowing. Proof of payment is very different from proof of borrowing. Of course, the transfer can be a loan, but there must be an IOU.

The transfer can be a repayment, and you don't want any notes. Transfers can be other payments. Whatever can be paid in cash, it can be paid by transfer.

The scope of transfer payments is too broad to be used as evidence of borrowing.