Vodacom Nightmare Continues

My nightmare with Vodacom continues. I had 2 accounts for data, totalling R379 a month. In December both contracts reached their end. I phoned and asked for the one to be terminated, the other to be continued with a Black Friday deal of 20G per month, for R199. I was assured it would be sorted, ref number and all. 5/1/21 I get a deduction of R510.29! I phone them again, they say they see it was cancelled, can't understand why not done. Will be rectified next month. 2/2/21 I get a bill for R690! What now, every time I phone it gets worse! Ref ***. And want the money back that they have ****** from me. Victor was the consultant. Ref ***