The worst experience with vodacom ever !!!

So this is my second complaint from the first one last month, i have renewed 2 of my contracts with them via upgrade got a tablet and a sony M2 aqua. within 7 days return the sony as it was faulty, wait 7 days get another sony m2 and then return that too in 7 days as it was faulty as well. a few days later there m4 is out and i had to wait for it to arrive for a few days but no problem waited and received it. by now my account debited and I notice an extra R100 goes off my account. i enquire and the manager tells me it is for my old mobiles i had of which The sales man PEETRIE neglected to make me aware of. ok the manager then says she will sort this out and i will not have to pay the R100 in the next month. ok so we know the M2 is faulty so they advise me to take the M4 at my old contract price plus R17 then i get my R150 airtime and the new Sony M2. i said that is fine. Went in to store and to find out that these people denies this and now i am forced to pay more R259 but only getting 110 airtime. to top it off I get an sms from the bank and guess what??? my account has been debited with an extra amount of R100. and now they deny ever saying that as well. solve this today