Post paid

I had call from vodafone care before 10 days and they told me that if you like to transfer your sim from prepaid to postpaid then you will get offer of 299 plan in this plant you will receive 1 gb of 4g data also 800 local and 200 std minutes after i accept this offer i changed my sim with same but i had receive mail and i seen that plan is changed with 399 what rabish cheating with me i will never trust vodafon and i realize vodafone is very cheap company