Cheated with 2 contracts and wrong price!

In August someone from Vodacom phoned and asked if I want to upgrade my phone. I said yes. They offered me a Galaxy A01 for R90 a month. When the phone was delivered I also got a Galaxy Core. I immediately phoned them on the same day and asked what was going on, They said I had a upgrade for R175 (NOT R90) and an extra contract for R125 for the Galaxy Core. I said come get the phone and cancel the contract. It is now the 23 of September, nearly a month later and no-one came to get the phone. I phoned again and they said the couriers are busy but they will come. I said well cancel the contract so long that I don't want and did not ask for. They said they cannot till the phone is returned. I said but its your fault: first the contract not asked for and now not being picked up and I have to pay the R125 but it will be refunded! We all know what that means: calling and calling and asking where is my refund? Nobody can also tell me why it is R175 and not R90. And the old contract they said will be cancelled and the upgrade is in its place. They better not charge me for the old contract, They called me and offered the upgrade and now it is a mess that I want fixed! Vodacom better not charge me for the extra phone or the old contract or I will cancel everything and they can come and get both the phones!