Incorrect info ??/ as well as confused

Good day Sir/Madam

Please assist /advise.

I have been called in August by ByMondo wrt phones that they want to sell to me. ( Selena Pillay - sales person).

She advised that I qualify for 2 x Hisense cellphones at R99 per month.

I will get it once I pay my Admin Fee of R99 and then they will deliver within 15 days. ( 29/30 August, I received it. She advised that I will then pay a pro-rata for the 2 – 3 days plus The 2 x R99.00

I received the phones and by September my 1st premium was R299.00? I called Telkom as per Bymondo they cannot give feedback on billings.

Cynthia Sibiya then advised me the the extra R100 +/- is for the devices and not a pro-rata premium.?????

Something I was not explained before by the sales consultant. Cynthia then advised me that my debit order will be R539.00 +/- for October due to this incorrect info that I received from Selena employee number 4592.

Today I checked my emails and received a bill of R932.34????

I called and Ntombi Nyauu now tells me this is due to the rejection of R299 in September that I have to pay Telkom R209.

PLEASE ADVISE WHAT IS HAPPENING HERE. TELKOM IS CONFUSING ME?????.

I want to complain and get URGENT FEEDBACK ON THIS ASAP.